This is a very old and historic trail about 5.5 km in length, climbing the southeastern flank of the mountain. It starts from the main park office in Amphoe Phu Kradueng, at an elevation of about 300 m. There are many places to rest on the way up. These rest plateaus are called Sam (ซำ). At each there are several vendors selling food and drinks, and some provide toilet facilities and/or medical services as well. There are eight of these on the way up. In order of ascent, they are: