Just north of Ilāvṛta-varṣa—and going further northward, one after another—are three mountains named Nīla, Śveta and Śṛṅgavān. These mark the borders of the three varṣas named Ramyaka, Hiraṇmaya and Kuru and separate them from one another. The width of these mountains is 2,000 yojanas. Lengthwise, they extend east and west to the ocean of salt water. The length of each mountain decreased by a little more than 10% compared to the previous mountain. North of Ilāvrṭa are the mountain ranges starting with Nīla. The mountains extend on the east and west (ubhayataḥ) to the salt ocean. The mountains after Nīla become shorter than 100,000 yojanas by a little over 10% each.