×

Samoa🇼🇸 | landmarksTo Sua Ocean TrenchSinkhole swim, wooden ladder, sea arch, garden lawns | things to do and best time to go

Explore Taga BlowholesExplore Lalomanu

Backpacking in To Sua Ocean Trench
🏆 Top pickunique site ranked #1
By Johan Kruseman 🇳🇱 | Updated October 15, 2026

Most people come for the swim: a 30-meter-deep sinkhole of luminous turquoise water, reached by a long wooden ladder bolted down the rock face. The overlooked part matters just as much. The trench sits inside a private family garden, so the visit also means wandering lawns, frangipani and coconut palms, with a sea arch and a rocky coastline just beyond. To Sua lies on the southeastern coast of Upolu in Samoa, in the Lotofaga area. Expect an entry fee that feels steep by Samoan standards, tour groups arriving mid-morning, and a ladder that is slippery and hot underfoot. Cloud shadows slide across the water, the swell thuds somewhere below the rim, and the pool smells faintly of salt and wet stone. Arrive early and you may have the water nearly to yourself. The climb down is 30 rungs, and the pool is cool, still and almost impossible to leave.

Discover everything you want to know in the 📖 Samoa Travel Guide.


example page 0 from our offline Travel Guide for Samoa
example page 1 from our offline Travel Guide for Samoa
example page 2 from our offline Travel Guide for Samoa
example page 3 from our offline Travel Guide for Samoa
example page 4 from our offline Travel Guide for Samoa
example page 5 from our offline Travel Guide for Samoa
example page 6 from our offline Travel Guide for Samoa
example page 7 from our offline Travel Guide for Samoa
Loading the map 🌍
CLICK TO FILTER
towns
villages
landmarks
national parks
hikes
beaches
attractions
festivals
regions
SHOW COUNTRY’S BESTSHOW ALL

✨ Why go?
Ranked #1 unique site in SamoaReasons people choose to visit here

The effort is small and the result is out of proportion. The ladder descent into the pool is one of the few experiences in Samoa that photographs well and feels even better in person. The water is a blend of seawater fed through a lava tube and a cool mineral freshness, and it glows a deep green-blue when the sun hits it overhead. You float in a volcanic crater rimmed with ferns, with a small platform and a rope to cling to while you look up at the sky.

It also anchors a day along the coast. The Lotofaga and Aleipata side of Upolu holds quiet beaches, village fales and snorkeling water within easy reach, so To Sua works as the headline stop in a loop rather than a standalone trip. It suits independent travelers with a rental car or a patient driver.

There is a third draw: the clifftop lawns … read more 👉
The effort is small and the result is out of proportion. The ladder descent into the pool is one of the few experiences in Samoa that photographs well and feels even better in person. The water is a blend of seawater fed through a lava tube and a cool mineral freshness, and it glows a deep green-blue when the sun hits it overhead. You float in a volcanic crater rimmed with ferns, with a small platform and a rope to cling to while you look up at the sky.

It also anchors a day along the coast. The Lotofaga and Aleipata side of Upolu holds quiet beaches, village fales and snorkeling water within easy reach, so To Sua works as the headline stop in a loop rather than a standalone trip. It suits independent travelers with a rental car or a patient driver.

There is a third draw: the clifftop lawns and the second smaller trench, a quieter pool where you can sit with a picnic and watch waves boom against the rock arch.

💡 HighlightsMust-see experiences and standout moments

  1. The Main Trench Pool: The reason you are here. A collapsed lava tube has left a round sinkhole roughly 30 meters deep, filled with clear, deep-blue water that rises and falls gently with the tide. Swimming here is calm, cool and weirdly quiet.
  2. The Wooden Ladder: About 30 rungs lead down the rock wall. It is steep, can be slippery when wet, and feels exposed, but most people manage it in a few minutes. Grip with both hands and go slowly.
  3. The Swimming Platform and Rope Rest: At the base, a wooden platform lets you sit, dry off and slip into the water in your own time. A rope floats across the pool for tired swimmers to hold.
  4. The Sea Arch and Blowhole Cliffs: A short walk from the trench, the coastline breaks into lava ledges where waves push through a natural arch. The spray and thud carry across
… read more 👉
  1. The Main Trench Pool: The reason you are here. A collapsed lava tube has left a round sinkhole roughly 30 meters deep, filled with clear, deep-blue water that rises and falls gently with the tide. Swimming here is calm, cool and weirdly quiet.
  2. The Wooden Ladder: About 30 rungs lead down the rock wall. It is steep, can be slippery when wet, and feels exposed, but most people manage it in a few minutes. Grip with both hands and go slowly.
  3. The Swimming Platform and Rope Rest: At the base, a wooden platform lets you sit, dry off and slip into the water in your own time. A rope floats across the pool for tired swimmers to hold.
  4. The Sea Arch and Blowhole Cliffs: A short walk from the trench, the coastline breaks into lava ledges where waves push through a natural arch. The spray and thud carry across the grass.
  5. The Second Trench: A smaller, quieter sinkhole nearby, lined with ferns. It is less often visited and good for a calm look from the rim.
  6. The Garden Lawns and Picnic Fales: Manicured grass, frangipani trees and open-sided huts make a comfortable place to eat lunch from the on-site cafe or your own bag.
  7. The Coastal Lookout: A rocky viewpoint over the Pacific, with surf crashing below. At low tide the lava shelf shows its jagged texture.
Allow about two hours for everything, or one hour if you only swim and take photos.
Spotted a mistake or missing something? Contact us.

Things to do near To Sua Ocean Trench

Full Day Tour in Samoa with a Local

Full Day Tour in Samoa with a Local

4.8(193)
From €119
per personViator
Full-Day Upolu Island Highlights Tour from Apia

Full-Day Upolu Island Highlights Tour from Apia

5.0(137)
From €119
per personViator
Apia Cruise: To Sua Trench, Lalomanu Beach

Apia Cruise: To Sua Trench, Lalomanu Beach

4.9(79)
From €132
per personViator
The Pristine Waters of Upolu

The Pristine Waters of Upolu

4.9(54)
From €137
per personViator
Apia Highlights Shore Excursion Tour + Lunch & Island Show

Apia Highlights Shore Excursion Tour + Lunch & Island Show

5.0(45)
From €177
per personViator
Island Show Fiafia Night @ Le Manumea Hotel

Island Show Fiafia Night @ Le Manumea Hotel

4.3(62)
From €34
per personViator
Namua Turtle Island and Eastern Upolu Tour

Namua Turtle Island and Eastern Upolu Tour

4.9(30)
From €160
per personViator
Samoa in a Day: Customizable Tour of Beaches, Waterfalls, Culture

Samoa in a Day: Customizable Tour of Beaches, Waterfalls, Culture

4.9(27)
From €173
per personViator
Apia Samoa : Full Day ,Cruise ship Excursion

Apia Samoa : Full Day ,Cruise ship Excursion

5.0(23) 6h 30m
From €137
per personViator
Premium Semi-Private Tour: Primeval Crystal Waters of Samoa

Premium Semi-Private Tour: Primeval Crystal Waters of Samoa

5.0(21) 9h
From €163
per personViator

Ratings based on Tripadvisor reviews. When you book through this link, you support our work at no extra cost to you.

🌤️ When to go?Choosing the right time of year

  • Dry Season (May to October): Days run 27 to 30°C (81 to 86°F) with lower humidity, and the trench's ladder and swimming platform are rarely slick. Sunrise is around 6:30 and sunset near 18:15. This is peak time, so tour vans arrive between 10:00 and 14:00 and the ocean pool gets crowded.
  • Wet Season (November to April): Expect 28 to 31°C (82 to 88°F), heavy humidity and afternoon downpours. Daylight stretches to about 19:00 in December. Cyclones are possible, mostly January to March, and the access road can flood. Crowds thin out and accommodation is often cheaper.
  • Tide and Time of Day: The trench is a 30 m (100 ft) deep sinkhole linked to the sea by a lava tube, so the water level rises and falls with the tide. High tide gives the deepest, bluest swim, while low tide leaves the lower platform
… read more 👉
  • Dry Season (May to October): Days run 27 to 30°C (81 to 86°F) with lower humidity, and the trench's ladder and swimming platform are rarely slick. Sunrise is around 6:30 and sunset near 18:15. This is peak time, so tour vans arrive between 10:00 and 14:00 and the ocean pool gets crowded.
  • Wet Season (November to April): Expect 28 to 31°C (82 to 88°F), heavy humidity and afternoon downpours. Daylight stretches to about 19:00 in December. Cyclones are possible, mostly January to March, and the access road can flood. Crowds thin out and accommodation is often cheaper.
  • Tide and Time of Day: The trench is a 30 m (100 ft) deep sinkhole linked to the sea by a lava tube, so the water level rises and falls with the tide. High tide gives the deepest, bluest swim, while low tide leaves the lower platform exposed. Early morning, right after opening around 8:00, gives you the pool nearly to yourself.
  • Events: The Teuila Festival in early September brings extra visitors to Upolu, so rooms fill up.
Check the tide table the evening before and arrive near high tide for the best swim.


source: climatestotravel.comJANJanuary: fair for travelingFEBFebruary: fair for travelingMARMarch: fair for travelingAPRApril: fair for travelingMAYMay: highly recommended for travelingJUNJune: excellent for travelingJULJuly: excellent for travelingAUGAugust: excellent for travelingSEPSeptember: highly recommended for travelingOCTOctober: highly recommended for travelingNOVNovember: fair for travelingDECDecember: fair for traveling
samoa-unique-site-to-sua-ocean-trench
© Google | Alfahad91

✈️ The backpacker research shortcutSamoa Travel Guide

An offline-friendly backpacking guide with optimized travel routes, ranked highlights, transport advice, and the best areas to stay.
example page 0 from our offline Travel Guide for Samoa
example page 1 from our offline Travel Guide for Samoa
example page 2 from our offline Travel Guide for Samoa
example page 3 from our offline Travel Guide for Samoa
example page 4 from our offline Travel Guide for Samoa
example page 5 from our offline Travel Guide for Samoa
example page 6 from our offline Travel Guide for Samoa
example page 7 from our offline Travel Guide for Samoa
The digital guide (138 pages) contains:
✅ 37 highlights, ranked by travel appeal
✅ Optimized 2, 3 & 5-day travel routes
✅ Cities, national parks, landmarks, beaches
✅ How to get around
✅ Offline-friendly for travel without Wi-Fi
👉 Click to see all 30+ guide features

📅 Plan smarter in minutes, not weeks
✅ Month by month travel advice
✅ Festivals & national holidays
✅ Budget expectations

🗺️ Go to the right places, skip the overrated ones
✅ Honest pros & cons of destinations
✅ Top hikes, parks & viewpoints
✅ Lesser-known places most travelers miss
✅ Clear “worth it vs skip it” guidance

🛏️ Travel smoothly without rookie mistakes
✅ Best areas to stay
✅ Transport systems explained simply
✅ Common scams & safety advice
✅ SIM cards, money & practical tips

🌍 Understand the country, not just visit it
✅ Culture & traditions
✅ 52 Essential phrases & customs
✅ Festivals worth planning around
✅ Traveler-friendly historical context
✅ Insights that make places more meaningful

📱 Built for real travel conditions
✅ Fully downloadable PDF
✅ Works completely offline
✅ Optimized for phone use
✅ Useful in remote areas & buses
✅ Everything in one place
Stop searching, start planning
Get instant access to your full guide. 30‑day money-back guarantee.
+ Add another guide for just

By proceeding you agree to our terms.
Sent to your inbox immediately after payment • 100% Secure Checkout
Best Backpacking Travel Advisor 2025 tourism awardBest Backpacking
Travel Advisor
2025
What others say about Take Your Backpack Guides:
⭐⭐⭐⭐⭐
Fantastic, amazing amount of information!
⭐⭐⭐⭐⭐
My goodness this is amazing, it's what I've been looking for hats off too you!
⭐⭐⭐⭐⭐
I think this is absolutely BRILLIANT
⭐⭐⭐⭐
Very complete and informative. It's still missing places, but I gotta to commend you
⭐⭐⭐⭐⭐
This is truly amazing, thank you, can't wait to explore it with my kids!
⭐⭐⭐⭐⭐
Awesome resource, thank you!
⭐⭐⭐⭐⭐
This is amazing! Can't wait to explore the ones I haven't seen
⭐⭐⭐⭐
I love this! Well done, great idea.
⭐⭐⭐⭐⭐
Thanks for taking the time to make this gem!
⭐⭐⭐⭐⭐
This might be the best website I've ever seen.
⭐⭐⭐⭐⭐
Congratulations, and thank you so much for your work; it's incredibly valuable.
⭐⭐⭐⭐
In all seriousness I think you did a great job pointing out the important spots
⭐⭐⭐⭐⭐
10/10 very good
⭐⭐⭐⭐⭐
As someone who's only just starting to visit regularly this is awesome, thank you.
⭐⭐⭐⭐
Thank you very much! I'm going to visit my dad, it's going to be very useful!
⭐⭐⭐⭐⭐
This is really cool! We'll be travelling for the first time and this definitely come in handy.
⭐⭐⭐⭐⭐
You are now our minister of culture, congratulations 👨‍💼
⭐⭐⭐⭐⭐
Just wanted to tell you that this is a pearl! Going to follow your recommendations.
⭐⭐⭐⭐⭐
This is so cool. I'll definitely be using the resource for my travels soon.
⭐⭐⭐⭐⭐
This is very impressive! Good work.
⭐⭐⭐⭐⭐
This is an amazing and informative site. Very well done!

🛏️ Where to stay?Where staying makes the most sense

The south coast of Upolu, around Lotofaga, Saleapaga and Aleipata, puts you within 10 to 30 minutes of To Sua Ocean Trench, and that is where most budget travelers sleep. Beach fale (open-sided huts on stilts with a mattress and mosquito net) are the backbone of the area, usually US$25 to 60 a night per person, often with dinner and breakfast included. Nothing here is a party scene. Evenings are communal meals, kava with the family who runs the place, and a lot of stars.
Lalomanu, on the southeastern tip, is the most social stretch. It has a long white beach, a cluster of fale operators side by … read more 👉
The south coast of Upolu, around Lotofaga, Saleapaga and Aleipata, puts you within 10 to 30 minutes of To Sua Ocean Trench, and that is where most budget travelers sleep. Beach fale (open-sided huts on stilts with a mattress and mosquito net) are the backbone of the area, usually US$25 to 60 a night per person, often with dinner and breakfast included. Nothing here is a party scene. Evenings are communal meals, kava with the family who runs the place, and a lot of stars.
Lalomanu, on the southeastern tip, is the most social stretch. It has a long white beach, a cluster of fale operators side by side, and a steady flow of solo travelers swapping plans for the Falefa and Togitogiga waterfalls. Expect roughly 20 to 30 minutes by road to the trench from there.
Coconuts Beach and Return to Paradise areas near Siumu and Lefaga sit on the southwest side and suit people who want swimming and surf-break scenery, about 45 minutes from the trench.
Apia is the other option. It has the widest range of dorm beds, cafes and bus connections, with the trench roughly 1.5 hours away by road. Choose it if you want nightlife, supermarkets and a base for several days of day trips. Otherwise, the south coast is safer for sleeping peacefully, with low-key villages where you can leave your bag in a fale without much worry.
Best hostels in Samoa


Best quality hotels in Samoa

👛 Costs (as of 15 October 2026)Money, prices, and spending tips

A day at To Sua Ocean Trench costs about US$75 per backpacker, with the entry fee, a beach fale bed and a rental car or shared transport making up most of it.
CategoryBudget RangeLocal Reality
Entry feeUS$10 to 14Paid at the gate to the landowning family, in tala. It covers the lawn, the viewing platform and the ladder down into the pool. Children pay less.
Accommodation (high season, May to October)US$25 to 40Open-sided beach fale on the south coast of Upolu, a short drive from the trench. Dorm-style beds are rare, so solo travelers usually pay for a whole fale. Rates drop a little in the wet season.
Local transportUS$5 to 20Buses from Apia to Lotofaga run through the day for US$2 to 4, but you will need a taxi or a walk for the last stretch. A taxi for a day from your beach can run US$40 to
… read more 👉
A day at To Sua Ocean Trench costs about US$75 per backpacker, with the entry fee, a beach fale bed and a rental car or shared transport making up most of it.
CategoryBudget RangeLocal Reality
Entry feeUS$10 to 14Paid at the gate to the landowning family, in tala. It covers the lawn, the viewing platform and the ladder down into the pool. Children pay less.
Accommodation (high season, May to October)US$25 to 40Open-sided beach fale on the south coast of Upolu, a short drive from the trench. Dorm-style beds are rare, so solo travelers usually pay for a whole fale. Rates drop a little in the wet season.
Local transportUS$5 to 20Buses from Apia to Lotofaga run through the day for US$2 to 4, but you will need a taxi or a walk for the last stretch. A taxi for a day from your beach can run US$40 to 60, split between travelers.
FoodUS$12 to 22Many fale rates include dinner and breakfast. Lunch is a plate of fish, taro and chop suey from a roadside stall, or a café meal at the trench itself.
Snacks and drinksUS$3 to 6Bottled water and coconuts are sold near the entrance. Bring your own drinking water to save money.
Gear and extrasUS$0 to 5Reef shoes and a dry bag are worth having for the slippery ladder and rocks. There is no charge for swimming. A small donation is customary for village guides.
Total Daily BudgetUS$55 to 107Typical midpoint is about US$75 when you share a taxi and eat at your accommodation.
⚠️ Prices can change and everyone travels differently, so take this as a rough guide. Hope it helps you plan your adventure!

FAQTraveler FAQ

To Sua Ocean Trench is a deep volcanic sinkhole near Lotofaga on Upolu’s south coast, filled with clear seawater linked to the ocean by an underground tunnel. A steep wooden ladder of about 30 m drops to a swimming platform, and the garden above has lookouts and picnic spots. Entry costs about WST 20 (roughly US$7) per adult, and the water is calm enough for a relaxed swim.
Plan on 1.5 to 2 hours on site for the ladder, a swim and the clifftop views. Add the drive and you are looking at half a day from Apia, or a full day if you also stop at nearby beaches. Low tide is not required, but calm weather and midday sun make the water look its brightest.
The trench is about 1.5 hours by road from Apia, following the Cross Island Road and then the south coast road to Lotofaga. Local buses run from the Apia market to the south coast for a few tala, though you will likely have to walk the last stretch, so many travelers rent a car for US$60 to 90 a day or hire a taxi or driver. If you stay in Lalomanu or Return to Paradise, the trip is about 30 to 60 minutes by road.
⚠️ Things can change over time, so always validate details locally before you go.

Other Samoan landmarks near To Sua Ocean Trench

Explore more nearby:


💡 Not sure where to go next?
Create a personalized itinerary for Samoa including To Sua Ocean Trench and the places that fit your trip.

Generate my itinerary

👉 Discover all landmarks

Or checkout all Samoa has to offer (think cities, towns, villages, national parks, hikes, beaches, festivals)
Explore Samoa
Country photo of Samoa
© Google Images

We 💚 feedbackSumming up the experience

Most travelers arrive at midday, queue at the ladder with tour groups, and then rush the swim. Get there right at opening or in the late afternoon instead, when the light slants into the crater and the platform is quiet. Bring water shoes for the rungs, leave your valuables in the car, and give yourself time to float without watching the clock.

✍️ Help improve this page!
The information on this page is based on in-depth research, insights shared by experienced travelers, and feedback from the local travel community in Samoa. While every effort is made to keep the information accurate and current, conditions can change — so if you spot anything incorrect or outdated, please get in touch.



🙋‍♂️ Give feedback

👋 Meet the founderWho’s Behind Take Your Backpack?

Johan, backpacker and founder of TakeYourBackpackHi, I’m Johan (Netherlands 🇳🇱), the creator of TakeYourBackpack. Over the past 3 decades, I’ve backpacked through 90+ countries across six continents, gaining extensive experience with independent travel, long-term trips, and overland routes.

This site is built on a combination of firsthand travel experience and carefully curated insights from other backpackers. Many guides are based on places I’ve personally visited, while others bring together tips, observations, and practical advice shared by trusted travelers I’ve met along the way.

The goal is to provide realistic, experience-driven guidance — not generic itineraries — so you can explore destinations with better context, clearer expectations, and more confidence.

Read the full story