Mangar Bani is the last green cover between Delhi and Gurugram. It is preserved by the local Gujjar community. According to legends, a hermit named Gudariya Baba attained enlightenment in a cave inside this forest. It is believed that a curse may befall anyone who fells a tree in this forest. Because of this belief, the local community guard this forest, prohibiting the felling and pruning of trees. This has resulted in the forest currently hosting large number of flora and fauna.
Near this forest, archaeologists have discovered cave paintings that belong to the Upper Paleolithic age. This makes these paintings one of the oldest cave arts in India. They are found in the Aravalli mountain ranges.