Pha Nang Khoi Cave is located in Rong Kwang District, Phrae Province, and is part of a limestone mountain. Standing tall in the middle of the forest Covered with small and large trees, in the past when the forest was still plentiful. This area is full of many different kinds of animals. especially wild deer It is the origin of the name Rong Kwang District, Phrae Province, but when the area was converted into agricultural land, the animals gradually disappeared, leaving only limestone mountains. The caves and stalactites and stalagmites are beautiful and magnificent, and are sculptures created by nature. When woven together with local legends, it tells the origins of the stone pillars. figure of woman Holding the baby and waiting for the return of the man he loved.. which became the origin of the name “Pha Nang Khoi Cave”.