Vishnupurana 2.4.56

2.4.56

tatrāpi viṣṇurbhagavānpuṣkārādyair jānārdanaḥ /
yāgau rudrasvarūpaś ca ijyate yajñasannidhau //

The sea of Ghrita is encompassed by Krauncha-dwípa, which is twice as large as Kuśa-dwípa. The king of this Dwípa was Dyutimán, whose sons, and the seven Varshas named after them, were Kuśala, Mallaga, Ushńa, Pívara, Andhakáraka, Muni, and Dundubhi. The seven boundary mountains, pleasing to gods and celestial spirits, are Krauncha, Vámana, Andhakáraka, Devavrit, Puńd́aríkaván, Dundubhi, and Mahaśaila; each of which is in succession twice as lofty as the series that precedes it, in the same manner as each Dwípa is twice as extensive as the one before it. The inhabitants reside there without apprehension, associating with the bands of divinities. The Brahmans are called Pushkaras; the Kshetriyas, Pushkalas: the Vaiśyas are termed Dhanyas; and the Śúdras, Tishyas. They drink of countless streams, of which the principal are denominated Gaurí, Kumudwatí, Sandhyá, Rátri, Manojavá, Kshánti, and Puńd́aríká. The divine Vishńu, the protector of mankind, is worshipped there by the people, with holy rites, in the form of Rudra. Krauncha is surrounded by the sea of curds, of a similar extent; and that again is encompassed by Śáka-dwípa.