Khao Sok National Park, one of Southern Thailand’s most remarkable natural reserves, protects over 646 square kilometres of ancient lowland rainforest, dramatic limestone karsts and deep river valleys. At its centre lies the breathtaking Cheow Lan Lake, a vast emerald reservoir dotted with towering cliff formations and floating rainforest-clad islets—often considered one of the country’s most striking landscapes. The park offers a wealth of outdoor experiences, from guided kayaking and tranquil longtail boat excursions to forest hikes, caving adventures and gentle river tubing. Wildlife enthusiasts may spot a variety of species, including gibbons, macaques, boar and an impressive array of birdlife, while the forest itself is believed to be over 160 million years old, making it one of the oldest ecosystems of its kind. For many travellers, Khao Sok stands out as Thailand’s most immersive national park experience, combining dramatic scenery, rich biodiversity and a deep sense of wilderness.