Namtok Na Muang, or ‘Purple Waterfalls’, are so named because of the striking purple shade of their rock faces. There are other waterfalls to visit on Koh Samui, but these are considered to be among the most scenic. Na Muang is a popular place for families to relax and swim, and there is an elephant safari camp nearby where you can organise a ride through the jungle. Many Samui tours include a refreshing stop at the Na Muang Waterfalls on their itinerary.