Babak Pelangi Waterfall is located in the most remote hamlet of Lantan Village, namely Rerantik. The waterfall is named Babak Pelangi because visitors can often see a rainbow caused by the refraction of sunlight on the waterfall after it rains. The waterfall is directly managed by the youth of Rerantik Hamlet, with supervision still carried out by the Tourism Awareness Group (Pokdarwis) and the village authorities. In addition to the waterfall, visitors can also enjoy two swimming pools, one for children and one for adults.