Adhyaya 70: आदिसर्गः—महत्-अहङ्कार-तन्मात्रा-भूतसृष्टिः, ब्रह्माण्डावरणम्, प्रजासर्गः, त्रिमूर्ति-शैवाधिष्ठानम्
तदाचलत्वाद् अचलाः पर्वभिः पर्वताः स्मृताः गिरयो हि निगीर्णत्वाच् छयानत्वाच्छिलोच्चयाः
tadācalatvād acalāḥ parvabhiḥ parvatāḥ smṛtāḥ girayo hi nigīrṇatvāc chayānatvācchiloccayāḥ
その不動なる性ゆえに「アチャラ」(不動)と呼ばれる。峰や節(つぎめ)を備えるがゆえに「パルヴァタ」(山)と記憶される。まことに「ギリ」とは、その巨塊が呑み込まれたかのように重厚であるゆえであり、「シローッチャヤ」とは、大いなる岩の堆が横たわり広がるがゆえである。
Suta Goswami
It frames sacred geography: mountains as stable, rock-formed pillars of the manifest world, which supports the Shaiva view of the cosmos as a field where the Linga (Pati) is worshipped through stable, consecrated places.
By emphasizing immovability and steadfastness (acalatva), it indirectly mirrors Shiva-tattva as the unmoving Pati—unchanging consciousness—upon which changing creation is structured.
No specific rite is prescribed here; the takeaway is the Shaiva sacralization of mountains as ideal kshetras for tapas, dhyana, and Linga-sthapana within a Pashupata-oriented worldview.