Varāha-uddhāraṇa and the Re-constitution of Bhū-maṇḍala
Earth after Pralaya
सोत्सेधरंध्रप्राकारं सर्वतः खातकावृतम् / रुचकः प्रतिकद्वारं कुमारीपुरमेव च
sotsedharaṃdhraprākāraṃ sarvataḥ khātakāvṛtam / rucakaḥ pratikadvāraṃ kumārīpurameva ca
A fortress whose rampart has raised works and openings, and is encircled on all sides by a moat, is called Rucaka; Pratikadvāra and Kumārīpura are also (types of fortresses).