Matsya Purana — Narasimha’s Victory over Hiraṇyakaśipu and the Catalogue of Apocalyptic Omens
अगस्त्यभवनं चैव यदगम्यं कृतं पुरा सिद्धचारणसंघश्च विप्रकीर्णं मनोहरम् //
agastyabhavanaṃ caiva yadagamyaṃ kṛtaṃ purā siddhacāraṇasaṃghaśca viprakīrṇaṃ manoharam //
And also the dwelling of Agastya—made in ancient times as a place hard to approach—was charming, with hosts of Siddhas and Cāraṇas scattered about.
It does not describe Pralaya directly; it highlights a timeless sacred locale—Agastya’s hard-to-reach abode—suggesting continuity of holy sites and perfected beings across ages.
Indirectly, it supports the Purāṇic ideal of honoring ṛṣis and sacred places: kings protect pilgrimage routes and hermitages, while householders gain merit through reverent visitation and support of ascetic communities.
The key idea is a deliberately ‘inaccessible’ (yad-agamya) hermitage—emphasizing seclusion as a sacred design principle for āśramas—along with the ritual aura of siddha-presence, marking the site as spiritually charged.