4 Island Tour to Emerald Cave by Longtail Boat from Koh Lanta

Island hopping to the Southern Islands of Lanta

Cruise by iconic longtail boat to the 4 Islands near Koh Lanta. Stop at Koh Chueak and Koh Maa for spectacular open water snorkeling, and walk along the white sandy beach of Koh Ngai. The highlight of the tour is the Emerald Cave on Koh Mook, with a 80 m swim to the hidden lagoon in the inner of the island.
4 Island Tour to Emerald Cave by Longtail Boat from Koh Lanta
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Highlights

  • Island hopping by iconic longtail boat
  • Open water snorkeling at Koh Chueak
  • Float into the Emerald Cave on Koh Mook
  • Relax and sunbath at the beach of Koh Ngai
  • Splash and snorkel at Koh Maa

What to expect

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.

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.

Around an hour later visit Koh Mook, the largest island on this tour. 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.

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.

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!

Itinerary

  • 07:45 - 08:30: Hotel pickup on Koh Lanta
  • 08:30 - 09:00: Meet the crew at Lanta Old Town Pier & get instructions
  • 09:00 - 09:45: Cruise by longtail boat to the 4 Islands
  • 09:45 - 11:00: Snorkel & feed fish at Koh Chueak
  • 11:00 - 12:00: Swim into the Emerald Cave to the hidden lagoon on Koh Mook
  • 12:00 - 13:00: Lunch at the beach at Koh Ngai
  • 13:00 - 13:30: Free time for sightseeing on the island
  • 13:30 - 14:30: Open water snorkeling at Koh Maa
  • 14:30 - 15:30: Head back to Koh Lanta
  • 15:30 - 16:00: Transfer back to the hotel
  • * The tour program is subject to change due to weather & sea conditions

Inclusions

  • Hotel round-trip transfer
  • Drinking water, soft drink & seasonal fruits
  • Thai buffet lunch on the beach at Koh Ngai
  • Snorkeling equipment
  • Life jacket
  • Professional English-speaking guide
  • Basic travel accident insurance (covers injuries sustained only during the trip. It does not cover treatment for pre-existing medical conditions)

Important Information

  • Bring a towel, waterproof bag, swimwear, sunscreen, sun hat, sunglasses, flip flops and camera.
  • The itinerary is subject to minor adjustments during the low season (May to October) because of monsoon weather and sea conditions, and visits to Koh Chuek are suspended.
  • Wear flip flops or water shoes in case there are shells or rocks on the sand and shorts rather than pants as the water level may be above the knees when hopping off/on the boat.
  • This tour is not recommended for pregnant women, infants under 2 years or people with back or neck problems.
  • There is a minimum of 10 people required to run this activity! On the rare occasion that we should be required to cancel this trip, we will inform you in advance and offer a different travel date, an alternative activity or provide a full refund.

Reserve your spot

Not available

Foreigners

Adults (12+)
Children (4-11)
Infants (2-3)

Thai Nationals

Adults (12+)
Children (4-11)
Infants (2-3)
Starting location *

Price Breakdown

Activity price
Adults 0 × 1,000.00 THB
0.00 THB
Total price 0.00 THB
  • To guarantee a booking, book no later than 11 hours before the scheduled departure time.
  • During high season (November - April) and on National Holidays, book as early as possible as seats sell out fast.
  • Due to bad weather or sea conditions, the tour may be postponed or cancelled with a full refund.
  • You can cancel up to 24 hours prior to departure date and receive a refund (minus payment fees). Read our Terms & Conditions.

Activity Details

  • Availability
  • Schedule
    09:00 - 16:00
  • Duration
    7.0 hours
  • Means of transport
    Traditional longtail boat
  • Guidance
    Professional English speaking tour guide
  • Group size
    10 - 25 people

National Park Entrance Fee

There is an entrance fee for 'Hat Chao Mai National Park' of 200 THB per adult and 100 THB per child to be paid. These fees help rangers keep the park protected and clean.

You can choose to pay the fees now or on the day of the trip.

Places of Interest

Last updated: 27.08.2026 at 13:24
Total 0.00 THB
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