The Moss Hill Geosite is a conservation area that has a rich biological property of the metasedimen rock in the Tajam Formation. The biodiversities consist of numerous types of moss and orchids of tropical rain forests. This area is also a source of water and sacred by the local community. The land protection of the area as a water source is responsible to the local culture of farming in Belitong which does not depend on the season and can be carried out throughout the year. The visitors can explore the hills with fresh air and beautiful views of the south east of Belitung Island.
The hilly area is an area isolated from the others because it is bordered by valleys and mountain ridges. The hilly area of tropical rainforests is an area that has high humidity and evaporation with low sunlight penetrating the shade of trees. This condition allows the growth of moss, ferns, orchids, and epiphytic plants on the surface of rocks and trees.