Hua'ao Island is located on the surface of Sanmenwankou in the south of Xiangshan Mountain. It is a crystalline stone forest on the coast. It is magnificent. The stone forest of Huayuan Island is actually the channel of the central volcanic magma in the late Jurassic period. The four- or hexagonal stone column group is dense black fine-grained basalt. The surface is yellow-brown due to seawater erosion and weathering. It is an important primary structure of volcanic rocks. After the volcanic eruption, the magma is produced under uniform cooling and slow contraction. A vertical fission that creates a peculiar “sea stone forest” landscape.