The Arboretum is situated in the permanent forest area of around 2.4 square kilometres, Ban Non Makha, Tambon Kut Lo. Phu Kum Khao has an appearance like a large pile of rice and a small volcano. There is a Phrathat made from wood and Buddha images on the top of the hill. Phu Kum Khao is a sacred place and a centre of unity for Tambon Kut Lo’s community and Amphoe Kaset Sombun’s people. On the 8 th day of the waning moon of the 5 th lunar month of each year, villagers will make merit, which has been inherited since the past to the present, called “Ao Bun Phu Kum Khao”. The natural state is a dry dipterocarp forest, with abundant valuable plants; such as, Makha wood, Siamese Sal, Sindora siamensis, Burma Padauk, Star Gooseberry and Myrabolan Wood. The forest ground is laterite, a large stone outcrop on the ground. To get there: Take the Chaiyaphum-Chum Phae bus to Amphoe Phu Khiao for 80 kilometres, then take the Amphoe Kaset Sombun bus to the Arboretum (Phu Kum Khao) for 7 kilometres.