Matsya Purana — Cosmography of Śākadvīpa and Successive Dvīpas: Mountains
सर्वधातुमयैः शृङ्गैः शिलाजालसमन्वितैः द्वितीयः पर्वतस्तत्र उन्नतो नाम विश्रुतः //
sarvadhātumayaiḥ śṛṅgaiḥ śilājālasamanvitaiḥ dvitīyaḥ parvatastatra unnato nāma viśrutaḥ //
There, the second mountain—renowned by the name Unnata—rose lofty, its peaks composed of every kind of mineral and interlaced with networks of rock.
This verse is not about Pralaya; it belongs to cosmographic description, portraying the world’s stable features—especially mountains—by detailing their mineral-rich peaks and rocky formations.
Indirectly, it supports the Purana’s broader ideal of righteous governance and settlement: knowing the land’s natural features (mountains, stone, minerals) informs resource stewardship, protection of sacred landscapes, and prudent use of materials.
While not a direct Vastu rule, the verse highlights stone networks and mineral-rich peaks—materials and terrain that later Vastu and temple-building discussions treat as important for selecting sites and sourcing durable stone for ritual architecture.