Li Phi Waterfall, also called Somphamit Waterfall, is one of the highlights of the 4,000 Islands and it’s a good reason to peel yourself out of the hammock. The roaring rapids are formed by a branch of the Mekong squeezing between the small isles of Don La and Don Siniat, a torrent of water pouring over massive boulders. You’ll also spot bamboo fishing traps amongst the smaller rapids. Speaking of traps, keep behind the barriers Li Phi means “ghost/spirit trap” and a slip from the boulders will easily explain why.