Khao Nan National Park, Nakhon Si Thammarat

Ancient limestone karsts rise dramatically from dense tropical rainforest, creating a landscape that feels almost prehistoric at Khao Nan National Park. This 430-square-kilometer wilderness sanctuary in Nakhon Si Thammarat province protects some of southern Thailand’s most pristine ecosystems, where rare wildlife thrives among towering peaks and cascading waterfalls. The park’s remote location means you’ll often have entire trails to yourself, making it perfect for those seeking authentic wilderness experiences away from crowded tourist destinations.

Hiking trails wind through multiple forest zones, from lowland dipterocarp forests to cloud-shrouded montane vegetation near the summits. The park’s crown jewel, Khao Nan peak, challenges experienced trekkers with steep ascents rewarded by panoramic views across the Nakhon Si Thammarat mountain range. Several waterfalls punctuate the landscape, including the multi-tiered Nam Tok Ai Khiao, where you can cool off in natural swimming pools surrounded by giant ferns and orchids. Wildlife enthusiasts might spot langurs, macaques, and over 200 bird species, while the lucky few may glimpse Asian elephants or even tigers that still roam these protected forests.

Silence dominates here, broken only by bird calls echoing through the canopy and the distant rumble of waterfalls. The air feels thick and humid, carrying the earthy scent of decomposing leaves and blooming wildflowers. Morning mist often shrouds the higher elevations, creating an almost mystical quality as shafts of sunlight filter through the forest canopy. This is Thailand’s wilderness as it existed centuries ago – raw, untamed, and deeply peaceful.

Visit during the cool season (November to February) for the most comfortable hiking conditions and clearest mountain views. The park sits about 80 kilometers from Nakhon Si Thammarat city, accessible via Highway 401 and local roads – having your own transportation is essential as public transport doesn’t reach the park. Pack plenty of water, insect repellent, and sturdy hiking boots. Basic accommodation is available at park headquarters, but booking ahead through the Department of National Parks is recommended, especially during peak season.