The park contains the largest wild forest of Lan palms (Corypha lecomtei) in Thailand.
It is a core component of the Dong Phayayen-Khao Yai Forest Complex, which protects over 800 species of fauna.
The park serves as a vital corridor for wild elephant populations moving between Khao Yai and Pang Sida National Parks.
The landscape is defined by the Dângrêk Mountain range, contributing to its complex topography.
It was established in 1981 as Thailand's 29th national park.
Thap Lan National Park is the second-largest national park in Thailand, covering over 2,235 square kilometers across the Prachin Buri and Nakhon Ratchasima provinces. It forms a critical part of the Dong Phayayen-Khao Yai Forest Complex, a UNESCO World Heritage site known for its significant biodiversity. The park is characterized by its expansive Lan palm forests, which are among the largest remaining stands of Corypha lecomtei in the country. Visitors access the park primarily to explore its rugged sandstone mountains and various forest types including dry evergreen and tropical rainforest. The area is home to diverse wildlife, including wild elephants, gaur, and various bird species. Several waterfalls, such as Lan Phao and Huai Yai, are located within the park boundaries. The park features steep terrain and dense vegetation, requiring caution during hikes. It remains a major conservation zone focusing on the protection of rare flora and fauna.
The scenic viewpoints overlooking the vast canopy of the Lan palm forest.
Wear long-sleeved clothing and trousers to protect against leeches and insects during the rainy season.
Carry a high-quality insect repellent containing DEET, as mosquito activity is high in the forested areas.
Always stay on designated trails to avoid becoming disoriented in the dense, remote jungle terrain.
Attempting to hike deep into the interior jungle without a licensed park ranger or guide.
Some trail sections may be closed periodically during the peak of the rainy season for visitor safety.
Maintain silence to avoid disturbing wildlife, pack out all trash, and do not feed wild animals.
