Phnom Santuk is considered a holy site of pilgrimage for Cambodian Buddhists. There are several images of Buddha carved directly into the mountain stone. This one shows Buddha in a meditative pose.
Here's a walking Buddha - though he is on a much smaller scale. You can see the most important reclining Buddha here (I didn't get a photo of my own).
And just for fun, here are some monkeys looking for food on one of the offering stands. Photos taken in December 2016.