What type of subsoil is in Siberia?

Siberia predominantly features permafrost, a layer of permanently frozen subsoil that can extend hundreds of meters deep. Beneath this permafrost, the subsoil consists of a mix of mineral-rich sediments, clay, and silt, which can vary significantly across different regions. In some areas, especially in the southern parts of Siberia, there may be more fertile soil layers that support vegetation. Overall, the harsh climate and extensive permafrost significantly influence the region's soil characteristics and ecology.