Koh Chang has several waterfalls, the largest on the west coast within easy reach of White Sand beach , Kai Bae beach and Klong Prao beach , is Klong Plu Waterfall. … Ideally avoid the weekends as waterfalls are a magnet for Thai visitors who tend to make a beeline for them and, as this is by far the largest waterfall on the west coast, it can get busy. At the start of the walk you’ll also see a small visitor centre which houses a collection of posters and information …