Valmiki Ramayana Kishkindha Kanda Sarga 43 Shloka 15
Original Shlokaततस्सोमाश्रमं गत्वा देवगन्धर्वसेवितम्। कालं नाम महासानुं पर्वतं तु गमिष्यथ।।4.43.15।।
1 source checked for this shloka
ततः then, देवगन्धर्वसेवितम् inhabited by gods and gandharvas, सोमाश्रमम् hermitage of Soma, गत्वा after visiting, महासानुम् great slopes, कालं नाम named Kala, पर्वतं तु the mountain also, गमिष्यथ go and explore.
'Then go and explore the hermitage of Soma inhabited by gods and gandharvas and also the great summits of mount Kala.