Amazing! The trip is a little bit hard, but I did it with my friends, and we walk on mountain around 3-5 hours. It's really amazing! When you get on the mountaintop, you can hire a mountainbike to get to the visitors center, or walk.
We watched the sunset at Mak Dook cliff. The morning after we got all together at 5AM and walked to nonk an (i think that was the name) to watch the sunrise. Very beautiful! the trip back down, it's not so easy. we take some warm clothes, because at night and in the morning it gets cold up there