SANGCHAN WATERFALL The Moonlight falls in PHA taem National Park, Ubon Ratchathani. The waterfall is a waterfall in Moonlight effect is the waterfall will flow through the chimney to fall like a stone wall as hole. If looking from the bottom line time water flows through a beautiful hole. Caused by the erosion of the river by rain fall very much. The water in the stream according to the PA, they will have plenty of speed and pressure, along with the tides, it blew take remove the pebbles. Flow rocks to which it has pebbles rocks stick into the flow in one hole. When the gravel stones to stick in the hole with the water flow pressure. Those rocks and pebbles, it runs in a loop hole. Make a hole in the sandstone, which is less pure gravel stones. The expansion is a long hole even wider hole into the day, it is becoming a tight hole, hole, down stream from flowing into becoming "the waterfall hole" in the end.