Arjuna's Penance, Mahabalipuram
One of the most famous stone carvings at Mahabalipuram aka Mamallapuram near Chennai Tamilnadu state of India, is the Arjuna's penance, an enormous relief made on two massive boulders. Considered to be one of the largest open-air rock canvases in the world, the Arjuna's penance is 31m long and 9m high.