Valmiki Ramayana Kishkindha Kanda Sarga 27 Shloka 12
Original Shlokaप्रागुदक्प्रवणे देशे गुहा साधु भविष्यति। पश्चाच्चैवोन्नता सौम्य निवातेयं भविष्यति4.27.12।।
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सौम्य goodnatured Lakshmana, प्रागुदक्प्रवणे descending path in the northeast, देशे of this place, गुहा cave, साधु auspicious, भविष्यति it will be, पश्चात् west side, उन्नता elevated, इयम् this, निवाता free from strong wind.
'O goodnatured Lakshmana the descending path on the northeastern side of the cave and elevation on the the west is auspicious.This place is protected from rain water and from strong wind.