Another waterfall in Koh Phangan where you can swim all year round, the Wangsai Waterfall has a ''natural version'' and a landscaped version, where the artificial pool allows you to bathe whatever the time of the year. Close to Mae Haad beach and the small island of Koh Ma opposite, you can reach it by a small trek in the jungle (you must know the path)
There is also a leisure center that has settled there and offers several activities including a zipeline. Which, I must confess, removes a little of the bucolic side of the place.