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The hidden lagoon
Our package offers a captivating 4-island tour featuring the renowned destinations of Koh Ngai, Koh Maa, Koh Chuek, and Koh Mook, famously known for its mesmerizing Emerald Cave. These islands remain a hidden gem, relatively untouched by Western tourism, allowing visitors to experience pristine paradise in all its glory.
Expect to encounter vibrant coral reefs teeming with a dazzling array of colorful fish and other marine life, including the charming anemone fish.
The Emerald Cave on Koh Mook lures tourists for good reason. To reach this hidden lagoon on the island's west coast, you must swim through a dark cave for about 80 meters. It's a unique adventure that some will embrace eagerly while others may hesitate. But the payoff is a stunning hidden paradise.

Koh Chuek
Koh Chuek is undoubtedly a must-visit destination. Renowned for its stunning and vibrant coral reefs, it's a snorkeler's paradise. The island's unparalleled white sandy beaches and crystal-clear turquoise waters create an ideal environment for swimming. However, while it might seem like a cliché given the breathtaking beauty of all the islands around Koh Lanta, each one possesses its unique charm, and Koh Chuek is no exception.
What sets Koh Chuek apart is its distinctive character. For those who prefer a less intense diving experience, there's an opportunity to explore the colorful corals and marine life in the narrow channel that separates the island's two small mountains. While it may not offer the same level of excitement as other spots, the breathtaking scenery alone makes your time here entirely worthwhile.
This highly sought-after excursion is widely promoted across Ko Lanta, making it a must-consider option for your trip. It offers an enchanting journey through the picturesque islands located south of Koh Lanta, within Trang Province.
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**Info about for availability of the Green Season **
During the period of June to October, known as the "green season," Koh Lanta experiences varying weather conditions. The weather can swiftly transition from clear blue skies to rain, and even when the beach appears calm, offshore areas may be windy, leading to larger waves. Our top priority is the safety and comfort of our customers. Therefore, we will only proceed with your private longtail trip if we deem it safe to do so. There may be occasions when we need to make last-minute changes to itineraries or reschedule for another day.
Please be aware that between June and October 15, we are unable to visit Koh Rok, as the national park is closed to tourist boat trips during this period. Your understanding is greatly appreciated.
From Koh Lanta, the most affordable tours are done southeast shore of Koh Lanta, where there are still not so touristy and pristine island with turquoise blue waters, where or can snorkel, watch the amazing whale sharks or the colorful anemone fish. There are 2 types of tours: shared and chartered.
Longtail shared tours
For shared tours, a maximum capacity of 6 people will go on the longtail and prices range from 900THB to 1500THB, depending on the season and if there are enought people to execute the tour. You will share the boat with other tourists, mainly guests at our hotel.
Chartered private longtail
For chartered tours, you will have the longtail and its captain entirely at your disposal, hence you can make any route you like around these islands or go to Koh Rok or Koh Haa. Prices start at 7500THB for 4 island tour, with all included ( food, snacks, fruit, drinking water, national park fees, insurance, shuttle to/from Reena)
Included in your itinerary...
1. Koh Chueak - Our journey begins with a visit to Koh Chueak , an island adorned with imposing limestone cliffs enveloping its entirety. This is usually our initial stop, offering an excellent opportunity for snorkeling. Don't forget to marvel at the captivating limestone formations and the grand stalactites gracefully draping over the cliffs.
2. Koh Mook & Emerald Cave - The standout highlight of this adventure is the enchanting Emerald Cave, locally known as 'Tham Morakot.' Here, we embark on an extraordinary swim, covering a distance of 80 meters through a spacious limestone tunnel. Our destination: a concealed lagoon nestled in the heart of the island, encircled by soaring cliffs reaching 100 meters in height. As you emerge, you'll feel transported to a bygone prehistoric era, surrounded by untouched jungle with colossal tropical plants and ferns clinging to the cliffs. It's a truly exceptional and unforgettable experience, almost like stepping into a forgotten ancient world. The only thing missing might be pterodactyls soaring overhead!
Please note that the swim through the Emerald Cave spans approximately 80 meters, and the cave itself is a sight to behold. To guide your group safely through the cave, a member of our boat crew will accompany you with a torch. Even if you are a proficient swimmer, we recommend wearing a life jacket to facilitate the swim, especially if it's your first time exploring the cave. The decision to enter the cave may not be suitable for young children and is at the discretion of parents.
3. Koh Maa - Koh Maa is another limestone karst island akin to Koh Cheok. While snorkeling here, be on the lookout for a vibrant underwater world, including parrotfish, giant clams, angelfish, and, of course, the beloved clownfish, affectionately known as Nemo.
4. Koh Ngai / Hai - Ko Ngai, sometimes referred to as Ko Hai, is a pristine island partially under the stewardship of the National Parks of Thailand. Here, you'll find unspoiled jungles, powdery white sand beaches, and exceptional snorkeling spots with breathtaking vistas of the deep blue ocean extending to the southern islands. Along the beach, nestled under the shade of coconut palms, you'll discover a handful of small resorts.Â
Itineraries
get ready
Time : 8:00
Meetup at the Reception
Ready at 8:00. A driver will take you to the pier at Old Town Lanta.
Departure from pier
Time : 9:00
And off you go...
After all set, departure from Lanta Old town pier
Koh Chueak
Time : 10:00
Snorkeling heaven!
Enjoy Koh Chueak for the most amazing snorkeling you have ever experienced, full of colorful fish and reefs.
Koh Mook
Time : 11:00
Dare to dive Emerald Cave
If you are ready to swim for 80m through Emerald Cave, then get ready for paradise at the other side.
Koh Ngai
Time : 12:00
It's lunch time!
Let's have a delicious lunch, and later you'll have the freedom to explore the white sandy shores and the surrounding area, indulge in a swim, and engage in snorkeling in the crystal-clear shallows just off the beach.
Koh Maa
Time : 13:00
A special litttle island
This little island is never visited and our captains have discovered a beautiful area where you can do some more fish and color spoting.
Going home
Time : 14:30
Let's sail northwest back home
Enjoy the return trip and you might just get lucky and see amazing whale sharks.
Return hotel
Time : 16:00
Get some rest sailor!
A driver will take you back to the hotel.
- Snacks and food
- Drinking water
- Snorkeling equipmentÂ
- InsuranceÂ
- National Park feesÂ
- SunscreenÂ
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As you prepare for your adventure, please consider the following:
Complimentary bottled water and lunch are provided, and you're encouraged to bring extra snacks or drinks if you desire.
Pack the following items for your comfort and enjoyment:
Swimwear
Shorts
Beach towel
Sunscreen
Sun hat
Sunglasses
Camera
Waterproof dry bag
While mosquitoes aren't typically active during the day, it's a good precaution to bring mosquito repellent, especially if you have young children.
Keep in mind that Koh Rok, Koh Bubu, and Koh Ngai/Hai host small resorts that offer additional food, snacks, and drinks. Having some spending money with you could be useful if you decide to indulge during your island getaway.
Bringing alcohol on board is absolutely fine, and we happily accommodate special ideas or event. However, we kindly request that you consume alcohol responsibly and show respect to both the boat crew and any fellow visitors enjoying the islands and beaches with you, if upon on shared tours.
We provide masks and snorkels onboard for your convenience. Additionally, we have a limited selection of fins, or 'flippers,' available for those who wish to use them.
Yes, life jackets are available onboard. Your safety is our priority. Also we understand that some people are more comfortable in the water with a lifejacket, and we’d recommend that young children always wear a life jacket.
Children are more than welcome on our longtail boat. However, as a general safety precaution, please exercise caution around open water and ensure that children are not left unattended. While we do provide small-sized life jackets, for young children, we recommend that you bring your own flotation or buoyancy aids that fit them properly for added safety. We do not accept infants under 1 year old .
The Thai longboat captain is well-informed about our tours and can address any inquiries you may have as well as give you some history about the places you are visiting. He also has some proficiency in English. However, if you would prefer a dedicated English-speaking guide, please feel free to inform us, and we will arrange that for you.
For all tour types, our pick-up window is scheduled between 8:15 AM to 8:45 AM at Reena's lobby. Our day trips typically depart at approximately 9:00 AM and conclude around 4:30 PM. Please note that this does not account for the time it takes for transfers back to your resort. From any of the piers where the longtail is departing, its a 15 car ride until Baan Reena.
biulas– :
Everything was great as expected!