Sub Chompu Arboretum, Khao Yai

Few places in Thailand offer such intimate access to pristine montane forest as Sub Chompu Arboretum, where ancient trees tower overhead and rare orchids bloom along well-maintained nature trails. This botanical sanctuary within the greater Khao Yai ecosystem serves as both research station and public park, protecting some of northern Thailand’s most diverse plant communities. The arboretum’s elevated position creates a naturally cool microclimate that supports species rarely found elsewhere in the region.

Three main walking trails wind through different forest zones, each offering distinct plant communities and wildlife viewing opportunities. The canopy trail provides glimpses of hornbills and gibbons moving through the upper branches, while ground-level paths reveal medicinal plants, towering dipterocarp trees, and delicate ferns carpeting the forest floor. Bird calls echo through the misty morning air as sunlight filters through the dense canopy, creating dappled patterns on moss-covered logs. Wild orchids and rare flowering plants bloom seasonally along the trails, with informational signs helping visitors identify native species.

Tranquility defines the Sub Chompu experience, where the only sounds are rustling leaves, distant bird songs, and the occasional crack of branches as wildlife moves unseen through the understory. Cool, humid air carries the rich scent of decomposing leaves and blooming flowers, creating an almost primeval atmosphere. The sense of walking through an undisturbed ecosystem feels increasingly rare, making even short visits feel restorative and meaningful.

Early morning visits between 8:30-10:00 AM offer the best wildlife activity and cooler temperatures for comfortable hiking. The site is accessible by car from Khao Yai town, though public transport options are limited. Bring insect repellent, sturdy walking shoes, and water, as facilities are minimal. Entry remains free for all visitors, making this one of Thailand’s most accessible forest experiences for nature enthusiasts and casual visitors alike.