In arid western parts of India, such as Rajasthan and Gujarat, Hindu communities built large walk in wells that served as the only source of water in dry months but also served as social meeting places and carried religious significance. These monuments went down into earth towards subterranean water, up to seven storey, and were part of a temple complex. These vav (literally, stepwells) had intricate art reliefs on the walls, with numerous idols and images of Hindu deities, water spirits and erotic symbolism. The step wells were named after Hindu deities; for example, Mata Bhavani's Stepwell, Ankol Mata Vav, Sikotari Vav and others. The temple ranged from being small single pada (cell) structure to large nearby complexes. These stepwells and their temple compounds have been variously dated from late 1st millennium BC through 11th century AD. Of these, Rani ki vav, with hundreds of art reliefs including many of Vishnu deity avatars, has been declared a UNESCO World Heritage site.