Valmiki Ramayana Kishkindha Kanda Sarga 67 Shloka 48
Original Shlokaनिश्श्वसद्भिस्तदाऽर्तैस्तु भुजङ्गैरर्धनि:सृतैः।।4.67.48।। सपताक इवाभाति स तदा धरणीधरः।
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तदा then, सः that, धरणीधरः holder of the earth, mountain, निश्वसद्भि: hissing out of the rocks, अर्धनि:सृतैः protruding half of their body, भुजगैः serpents, सपताकः इव like the flags, आभाति appeared.
The serpents with their bodies half protruded out of the rocks and hissing looked like flags planted on the mountain.