Mahabharata 13.82.27

अतप्यत तपो घोरं हृष्टा धर्मपरायणाकैलासशिखरे रम्ये देवगन्धर्वसेविते

atapyata tapo ghoraṃ hṛṣṭā dharmaparāyaṇākailāsaśikhare ramye devagandharvasevite

Our plain-language meaning of this verse is waiting for scholar review.