Blue lagoon 4  seems to be a private area that is unknown to most people. There are tubes here to float around on the lagoon. There's also platforms for you to jump off from, including a Zipline. Perfect place to chill in the afternoon as the water is pretty cold. Best of all, Only few people here. There are no lockers but you can leave your items on the bench. There is also a toilet on site.

Blue Lagoon 4 is located 13 kilometers from the center of Vang Vieng.