Patala

[4] In Hindu cosmology, the universe is divided into the three worlds: Svarga, Bhumi or Martya (earth/mortal plane) and Patala (gross dimensions, the underworld).

Patala is described as filled with splendid jewels, beautiful groves and lakes and lovely asura maidens.

[1][8] The Bhagavata Purana calls the seven lower regions bila-svargas ("subterranean heavens") and they are regarded as planets or planetary systems below the earth.

The asura architect Maya has constructed palaces, temples, houses, yards and hotels for foreigners, with jewels.

[7] The Vishnu Purana,[1] states the seven realms of Patala, which are located one above the other, are seventy thousand yojanas (a unit of measurement) below the Earth's surface.

In Vishnu Purana, they are named as from the highest to the lowest as: Atala, Vitala, Nitala, Garbhastimat, Mahatala, Sutala and Patala.

Then, these women enjoy sexual play with the traveller, who feels to be stronger than ten thousand elephants and forgets impending death.

[9][8] Vitala is ruled by the god Hara-Bhava (possibly a form of Shiva), who dwells with attendant ganas including ghosts and goblins as the master of gold mines along with his consort Bhavani, as the progenitor of living beings and their sexual fluids flow as river Hataki here.

[9][8] Mahātala is the abode of many-hooded Nagas (serpents) – the sons of Kadru, headed by the Krodhavasha (Irascible) band of Kuhaka, Takshaka, Kaliya and Sushena.

[9][8] Rasātala at the sole of the feet of the universe form of Vishnu is the home of the Asuras – Danavas and Daityas, who are mighty but cruel.

[9][8] Patala or Nagaloka is the lowest realm and the region of the Nagas, ruled by Vasuki (the snake that hangs around Shiva's neck).

[11] Patala is associated with the Kriyātantras, which are associated with the kīla, the phenomenon of the tertön and terma and water magic[4] and with the attainment of vidyādhara (Chinese: 仙, 仚; pinyin: xiān) status.

[4] The importance of Patala to esoteric Buddhism lay in its role as the source of alchemy and magical science or vidyā, immortality and enjoyment, particularly the opportunity for the (male) vidyādhara to have intercourse with female non-humans.