The park is the third largest in Thailand. It covers an area of 300 square kilometers, including tropical seasonal forests and grasslands. Its altitude mostly ranges from 400–1,000 m above sea level. There are 3,000 species of plants, 320 species of birds, and 67 species of mammals, recording in this, Thailand's most famous National Park.
Another trail from Khao Yai. Mo Sing To (Reservoir) to the HQ (comes out at the food stands which is very nice as the som tam is top notch!)
Access to the trail is from Mo Sing To Reservoir (yellow route markers) - you cross the reservoir dam road and continue up the trail behind the reservoir. You could do it in reverse but it will be a little bit more difficult to follow as the last stretch to the river (behind the food stalls) is a bit obtuse in some areas. You have to follow the trail markers. Following the markers for whole trails will go yellow, red/blue, red, blue, red. You will also see the odd green, violet and orange markers - the Park really should sort that out!
Remember your leech socks as the end of the trail has a massive amount of leeches.
Length of trail :: 5 km
Hiking time :: 2 hours for full trail
Difficulty level :: moderate (scale : easy, moderate, hard, ouch)
Minimum essentials :: 1 L water, snacks.