[...] sky-ranging unearthly aerial city, going anywhere at will, and like unto the sun. And now (the city) entered unto the earth, and now it rose upwards, and at one time it went in a crooked way, and at another it submerged into water. [...]

source:

The Mahabharata
translated by Kisari Mohan Ganguli
published by Pratap Chandra Roy
Calcutta 1886-1890