Tosham Hill range, Tosham

Tosham hill range, located at and in the area around Tosham, with an average elevation of 207 meters, and the rocks exposed in and around Tosham hills are part of subsurface north-western spur of Alwar group of Delhi supergroup of Aravalli Mountain Range, belong to the Precambrian Malani igneous suite of rocks and have been dated at 732 Ma BP. This range in Aravalli Craton is a remnant of the outer ring of a fallen chamber of an extinct volcano. Tosham hill range covers the hills at Tosham, Khanak, and Riwasa as well as the small rocky outcrops at Nigana, Dulehri, Dharan, Dadam, and Kharkari Makhwan. Among these, Khanak hill is the largest in area and tallest in height. ()