Laohei Mountain, also known as Black Dragon Mountain, commonly known as Xianren Mountain, is a dormant volcano. It is one of the typical volcanoes in Wudalianchi. Due to its typical landforms, the forest is composed of black pumice. The green vegetation in summer and the white snow in winter can't hide its black luster, so it is called Black Dragon Mountain. The surrounding area of Laohei Mountain is a lava platform. Many years ago, when the volcano erupted, the lava went along the white river, forming "Stone Dragon". The stone dragon scene is rare and is a famous landscape of the Laohei Mountain. Looking far away like the waves of the sea, myopia is strange. The strange lava channel and the stalactite in the lava cavity are attached to the walls of the cave. It is a wonder.