Introduction to Gupo Mountain Rafting: Gupo Mountain Rafting is surrounded by mountains, rugged rocks, and towering ancient trees on both sides of the river. The river is filled with fine sand and pebbles of all sizes. The river is crystal clear. There are more than a dozen of them flowing down the river. The thrilling place with a drop of 2 to 3 meters, the boat is flying in the waves, and there is no danger.