Kaeng Tana River rapids largest information. Kaeng Tana is huge sandstone boulders. River Island is the information from the two tributaries of the Mun River. And eroded into the rock height of about 1 meter if the island Kaeng Tana is the rectangular building. This was built during the French colonization. To serve as the channel of navigation. Kaeng Tana River with rapids and deep. Under the water holes and boulders are also many underwater caves. As a result, the fish live Kaeng Tana abundant. The ideal months to visit is from November to June.