Koh Chang, Thailand’s second-largest island, offers a rugged mix of tropical jungle, mountainous terrain, and undeveloped coastline that’s ideal for immersive expedition travel. Dense rainforests, cascading waterfalls, and offshore coral reefs create a setting where land and sea adventures come together. From multi-day jungle treks and wild camping deep in the national park to sea kayaking along remote stretches of shoreline and diving among nearby islands, the region combines physical challenge with environmental learning and cultural insight. With support from local guides and our expedition leaders, travellers engage directly with Thailand’s rich biodiversity and traditional island life. Still largely untouched by mass tourism, Koh Chang is a destination where nature, culture, and adventure remain closely intertwined.