In Indian religions, Patala (Sanskrit: पाताल, IAST: pātāla, lit. that which is below the feet), denotes the subterranean realms of the universe – which are located under the earthly dimension. Patala is often translated as underworld or netherworld. Patala is described as more beautiful than Svarga (subtle dimensions, loosely translated as heaven). Patala is described as filled with splendid jewels, beautiful groves and lakes. In Vajrayana Buddhism, caves inhabited by asuras are entrances to Patala; these asuras, particularly female asuras, are often "tamed" (converted to Buddhism) as dharmapala or dakinis by famous Buddhist figures such as Padmasambhava. In Hindu cosmology, the universe is divided into the three worlds: Svarga, Prithvi or Martya (earth/mortal plane) and Patala (gross dimensions, the underworld). Patala is composed of seven realms/dimensions or lokas, the seventh and lowest of them is also called Patala or Naga-loka, the region of the Nagas. The Danavas (demon sons of Danu), Daityas (demon sons of Diti), Rakshas and the snake-people Nagas (Serpent-human formed sons of Kadru), live in the realms of Patala. The Vishnu Purana tells of a visit by the divine wandering sage Narada to Patala. Narada describes Patala as more beautiful than Svarga. Patala is described as filled with splendid jewels, beautiful groves and lakes and lovely demon maidens. Sweet fragrance is in the air and is fused with sweet music. The soil here is white, black, purple, sandy, yellow, stony and also of gold. The Bhagavata Purana calls the seven lower regions bila-svargas ("subterranean heavens") and they are regarded as planets or planetary systems below the earth. These regions are described as being more opulent than the upper heavenly regions of the universe. The life here is of pleasure, wealth and luxury, with no distress. The demon architect Maya has constructed palaces, temples, houses, yards and hotels for foreigners, with jewels. The natural beauty of Patala is said to surpass that of Swarga.