Narmada Shivling, also known as Banlinga, is a sacred symbol of India Shiva, which is obtained from the holy Narmada River in Madhya Pradesh, India. Naturally formed and smooth, these Shivalingas are considered to be self-reliant (self-destructive) and it is extremely revered in Hinduism. It is believed that a Narmada Stone Shivling is believed to bring peace, prosperity and spiritual... https://vedicvaani.com/deity-idols-and-pictures/shivling/narmada-shivling