Tanka is an underground reservoir built to store rain water. The tanka usually has a square or rectangular shape and is constructed from clay or stone. A wall is built around the tanka so that rain water can collect in it.

Narayani Devi Verma (She had played a key role in the Bijolia movement and also took many steps to promote women's education. While she was very active in the Praja Mandal Movement, her commitment to Gandhian ideals resulted in her active efforts towards tribal welfare and Dalit upliftment.