Although Samui has several waterfalls, the two Na Muang waterfalls are probably the most picturesque. The name Na Muang refers to the massive purple rocks at the waterfalls. Rocks and tree roots form a natural staircase that leads to the base of Na Muang 1. A large natural pool sits under the waterfall. A 10-minute walk further up the mountain leads to Samui's most beautiful waterfall, Na Muang 2.