The Southern Serayu Mountains are part of the South Central Java Basin located in the southern part of the province. This mandala is a geoantiklin that extends from west to east along 100 kilometres and is divided into two parts separated by the Jatilawang valley, namely the western and eastern regions. The western part is formed by Mount Kabanaran (360 m) and can be described as having the same elevation as the Bandung Depression Zone in West Java or as a new structural element in Central Java. This section is separated from the Bogor Zone by the Majenang Depression.