Waterfalls
Most people stumble upon Khowyai Waterfall (not on local maps) by accident, usually paying a visit to the Suk Valan Viewpoint.
Khowyai is a beautiful picturesque waterfall that cascades like a snake down the hillside. Interestingly, for some reason you'll see plastic or stone deer placed about the waterfall, not sure how this relates to wildlife on Samui but i guess they're there to enhance your experience.
There are man-made steps ascending the side of the waterfall with a steel hand railing to help guide you to the top. Once at the top you'll notice steps heading further up beyond the waterfall to a nice shaded viewpoint. It's a lovely spot to catch your breath and enjoy the natural surroundings of durian fruit trees and jungle palms.
Please remember it can get very hot, make sure you carry drinking water for the walk and it is best advised to wear a good pair of trainers, avoid flip-flops.
Take the road opposite the Mummified Monk at Wat Khunaram. Khowyai is the next stop after Wangsaothong Waterfall on your way up Pom Mountain. The road to the falls is only 30 metres down the drive off the main road. It's best to leave your bike or car up on the main road. There is nowhere to park, the road is steep and can get slippery with moss.
Entry is 10 Baht per person.