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4 Island Emerald Cave Tour: Snorkeling and Beach Exploration from Koh Lanta by Longtail Boat
4.1
18 Ratings
Ko Lanta Yai
Take a longboat ride to the four neighboring islands of Koh Lanta. Visit Koh Chuak and Koh Maa for an unforgettable snorkeling experience in open waters, and take a stroll on the pristine sandy beach of Koh Ngai. The tour’s crowning glory is the Emerald Cave on Koh Mook, where you’ll swim 80m to discover a hidden lagoon inside the island.
Take a longboat ride to the four neighboring islands of Koh Lanta. Visit Koh Chuak and Koh Maa for an unforgettable snorkeling experience in open waters, and take a stroll on the pristine sandy beach of Koh Ngai. The tour’s crowning glory is the Emerald Cave on Koh Mook, where you’ll swim 80m to discover a hidden lagoon inside the island.
Duration:
7 hours
Cancellation:
24 hours
Highlights
- The Longtail Charter and Tours - Meet the crew at the office in Saladan Pier.
- Ko Chueak - After a ride of approximately 45 minutes you will arrive at the first destination. Enjoy great snorkeling in crystal clear water of Koh Chueak , a small karst islet with sea caves and small sandy beaches between Koh Mook and Koh Ngai.
- Ko Muk -…
- The Longtail Charter and Tours - Meet the crew at the office in Saladan Pier.
- Ko Chueak - After a ride of approximately 45 minutes you will arrive at the first destination. Enjoy great snorkeling in crystal clear water of Koh Chueak , a small karst islet with sea caves and small sandy beaches between Koh Mook and Koh Ngai.
- Ko Muk - Around an hour later visit Koh Mook, the largest island on this tour.
- Morakot Cave (Emerald Cave) - It is best known for its Emerald Cave (also called Tham Morakot) and hidden lagoon in the center of the island. The entrance to the cave is located on the western side of the island and is only accessible during low tide. The cave itself winds for about 80 meters to its other exit, onto a white beach with an emerald pool surrounded by steep cliffs.
- Ko Ngai - Continue to Koh Ngai to enjoy a delicious Thai picnic lunch on the beach, consisting of steam rice, fried mix vegetables, Massaman Curry with chicken and seasonal fruits. Koh Ngai is a charming island that features a dramatic interior and a spotless sandy beach along its eastern coast. Mountainous and covered by tropical forest, the island is surrounded by clear waters with magnificent corals, making it a perfect site for snorkeling.
- Ko Ma - Cruise further to the second snorkeling spot at Koh Maa where you can feed the fish with bread or bananas. Thousands of giant bats can also be seen here.
Depart from Koh Maa for the long-tail boat trip back to Koh Lanta and arrive at the port in the old town at approx. 15.30. Get transferred back to your hotel on Koh Lanta.
If you like exploring tropical islands, caves and snorkeling with amazing marine life then this is the trip for you!
- Koh Lanta Old Town Pier - On this full-day excursion you’ll experience the beauty of the southern islands of Koh Lanta. Get picked up from your hotel 1 hour before scheduled departure and head to the pier near Lanta Old Town. A traditional longtail boat with an English speaking guide will be waiting for you, ready to depart to the 4 Islands on this fun-filled adventure.
What's Included
- Professional English-speaking guide
- Life jackets
- Basic accident insurance
- Drinking water, soft drink & seasonal fruits
- Thai buffet lunch on the beach at Koh Ngai
- Snorkeling equipment
- Hotel round trip transfer
- Professional English-speaking guide
- Life jackets
- Basic accident insurance
- Drinking water, soft drink & seasonal fruits
- Thai buffet lunch on the beach at Koh Ngai
- Snorkeling equipment
- Hotel round trip transfer
What's Not Included
- Gratuities
- Entrance fee to Hat Chao Mai National Park of 200 THB/adult and 100 THB/child
- Gratuities
- Entrance fee to Hat Chao Mai National Park of 200 THB/adult and 100 THB/child
Additional Information
- There is a minimum of 10 people required to run this tour!
- The tour program is subject to change due to weather & sea conditions
- There is a minimum of 10 people required to run this tour!
- The tour program is subject to change due to weather & sea conditions
Location
Koh Lanta Old Town Pier
Meet at the pier in Lanta Old Town at least 30 minutes before scheduled departure.
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Customer Ratings
4.1
(18 Ratings)
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Grace
Jan 23, 2026
So fun - The beaches and snorkelling points were really cool. Saw plenty of fish. The white beaches and clear waters were surreal. The beach after swimming through the cave was amazing and the crew were really lovely.
Review provided by Tripadvisor
Wander49010216975
Jan 14, 2026
Super nice and exceptionally great service - Super nice excursion with great crew, remarkable places, delicious food (buffet on the beach, even with Green Curry and Massaman Chicken) and top organization behind! Exceptional service even after the tour (if things were forgotten on the boat). Thank you so much!
Review provided by Tripadvisor
W5990bvjoshh
Apr 20, 2025
Fun times - Stunning adventure! Emerald Cave was magical, and the 4 Island Tour had perfect views and vibes. We have a friendly fun guide who ensured safety
Review provided by Tripadvisor
Diana_m
Jan 25, 2025
A Great Day - This trip was exceptional. I was picked up at my hotel, no hassle to find a ride to a meeting place. The boat ride was exciting, the snorkeling just beautiful and the swimming through the cave and into the isolated beach among the cliffs, was nothing less than breathtaking. I am a solo traveler yet was part of a fun group of people. The tour guides worked hard to make sure we were all safe also. I recommend this trip.
Review provided by Viator
Rebecca
Jan 20, 2025
Little trip to Paradise! - We have just had the best day on our trip. Really grateful for calm waters as the weather has been perfect (would definitely recommend choosing your day carefully)
The snorkelling was fun and we saw so many beautiful fish especially on our second stop!
The Emerald cave is an experience like no other (probably wouldn't get past EU health and safety) but you have a life jacket, it's amazing and you feel a real sense of wow when you emerge from the dark swim to the inner island!
Lunch was lovely, crew were great, overall just the the most amazing day!!
Real range of ages in our trip - if you can swim and enjoy beauty, nature and a bit of adventure - go on this trip!! Yes there are quite a lot of boats around but it never felt crazy busy and our boat guide had our back all the time:)
Review provided by Tripadvisor
Caddyandbella
Dec 18, 2025
Packed experience but most beautiful beaches - I was meant to go with my husband but he got man flu that morning so went by myself.22 of us on the boat so not a lot of room on the Longtail.50 min ride out to the first snorkelling spot.I did see a Moray eel and a few fish but nothing exciting.Off to the next spot before lunch at Koh Ngai where a few of us got stung by jellyfish.Lunch was a simple affair of rice,chicken and vegies,Massaman curry and fried chicken.Cold but delicious and fresh fruit for afters.Back on the boat and off to Emerald Cave which was excellent and luckily it wasnt packed when we were there.Guide helped one of the group into the cave as she wasnt a confidnet swimmer.You have to swim 80m into a dark cave to get through to the open area inside.Lastly we stopped at another stunning beach and I bought myself a cocktail and just admired the view.Stunning stunning beaches and Im from Australia and we are very spoilt.Enjoyed the whole tour and our group was very eclectic and different so great.One of the better tours that we did whilst in Thailand this time.1100bht for the whole day each
Review provided by Tripadvisor
Dan
Aug 5, 2025
Fun day, simple but good - We had a nice day, 2x snorkeling and visit Emerald Cave. Was less touristy than we feared, but is also low season. Food and drinks were well arranged. Have a nice day and value for money.
Review provided by Tripadvisor
Ambassador713036
Feb 1, 2025
Jou - Really nice trip. Cave wass beautiful like all the beaches. We were lucky with the weather, sun was shining and no wind at all.
Review provided by Tripadvisor
Bertwinh2020
Mar 5, 2024
Nice experience - Well organised, nice guide, tasty food and lots of fruit in between.
Just a shame about little to no colored coral and fish anymore. And snorkeling for a maximum of one hour during the entire day.
Fortunately, we had already been to the cave in the morning, so the crowds were not too bad, although the beach was still completely full. Entering the boat via the steps certainly requires some strength, but it is doable.
Review provided by Tripadvisor
Cathymerke
Nov 20, 2023
Four island tour..from Koh Lanta - Our Long tail tour included pickup at 0830, 30 min to pier, Koh's Chuek, Kraden, Muk(Emerald Cave) &Ngai.
It was a 50 min ride in a very loud, diesel smelling,overcrowded boat(24 +3 crew) to the first snorkeling stop Chuek. Among many other boats and people. Lots of fish to see but the water was so churned up from the boats it was dirty and cloudy. Could have passed on that stop. Next stop, 20 minutes to Kraden. Snorkeling on a large reef that is sadly quite brown but water was much clearer and lots of fish, giant clams and urchins to see. Had a nice lunch on the beautiful beach there. The crew were very friendly and helpful. Next stop 25 min to Muk. A beautiful 80 metre swim( life jackets if needed) guided with light through a beautiful cave. The water appears green and so peaceful. Through the cave you emerge on a stunning beach surrounded all sides by cliffs and trees. This was the best part of the day!. Be sure to give the guide your camera to have once you reach the beach. We were lucky it was not crowded , only our group. Back on the boat and had engine trouble. Sat for almost an hour bobbing in the heat. Understand things happen but everyone was ready to head home, we were already over an hour behind schedule. Went 25 min on to Ngai for a quick stop and drink. Unfortunately our time there was cut short , it's a very pretty beach with turquoise water. Next 50 min back to the Pier at Koh Lanta and 25 min truck ride to hotel arriving back at 6:30 pm It was a super long day , in my opinion too much travel time to balance the experience. It ended up being a 10 hr day with only about 4 hrs of experience and not great snorkeling. I'd recommend hiring a speedboat, go to Koh Muk early then find a nice island (Ngai ?) for a couple of hours then home. I must say the crew was really good and it's pretty impressive he was able to fix the motor / starter without many tools on board.
Review provided by Tripadvisor
