Emerald Cave (Tham Morakot),Thailand

• The emerald-green hidden lagoon inside the cave
• The narrow, low tunnel entrance (swim-through) carved through limestone
• Dramatic limestone cliffs and coastal scenery around the cave
• Nearby snorkeling spots and colorful reef life
• Photography opportunities with striking light and reflections

• Intense emerald coloration of the lagoon when sunlight enters
• A swim-through tunnel that connects the open sea to an enclosed lagoon
• Karst limestone formations and cliff geometry
• Vibrant marine life in the surrounding reef (reef fish, corals)
• Contrast of dark cave interior and bright lagoon creating dramatic lighting

• Swim through the tunnel into the hidden lagoon (requires basic swimming ability)
• Guided island-hopping boat tours that include Emerald Cave
• Snorkeling in nearby waters (outside the cave) to see reef life
• Kayaking near the coast (where offered) and beach time on Ko Muk
• Photography of the tunnel entrance, lagoon, and surrounding cliffs

Dry season (November–April) when seas are calmer and visibility is better. Visit during low tide and calm sea conditions for safe access through the tunnel; many operators schedule visits early morning to midday.

Tropical monsoon climate: hot and humid year-round. Dry season from November to April (calm seas), rainy season from May to October (rougher seas, reduced access).

There are no fixed 'opening hours' for the cave; access depends on tides and sea conditions. Emerald Cave is commonly visited as part of organized island-hopping tours. National park or local landing fees may apply (rates can change—foreign visitors often pay a small park/entrance fee). Confirm current fees with your tour operator or local authorities before travel.

Access by longtail boat from Ko Muk (the nearest island), with connections from Trang mainland, Koh Lanta, or Krabi via boat or ferry. The nearest airport is Trang Airport (TST); Krabi (KBV) and Trang are common regional gateways. Reaching the lagoon requires swimming through a low tunnel—visitors must be able to swim and comfortable in confined, dark passages; life jackets are typically provided by boat operators.

Include Emerald Cave on a half-day or full-day island-hopping tour. The actual time at the cave/lagoon is typically 20–60 minutes; allow 3–5 hours for transport and additional stops if on a multi-island tour.

Swimwear, quick-dry clothing, water shoes (rocky entry points), a life jacket, reef-safe sunscreen, a waterproof dry bag, towel, and a waterproof camera or case. A small waterproof torch can help when entering the dark tunnel, though guides usually neutralize the light contrast by scheduling visits at suitable daylight times.

Enjoy fresh local seafood on Ko Muk and dishes from Trang cuisine (pork and seafood specialties). Look for locally made handicrafts, woven items, and shell-based souvenirs sold in island villages. Support small local vendors and check that souvenirs are legally sourced (no protected shells or corals).