Sentence:  Looking to the east we could see Api and the mountains of west Nepal, shapely snow peaks in the distance, while in the immediate foreground, much lower but still dramatic, were the peaks of Panch Chuli IV and V (III was hidden by the <WSD>lip</WSD> of a huge cornice), Telkot and Nagling, all of them unclimbed, all steep and challenging. 
Meaning of the word marked with <WSD> tags:  The edge of a high spot of land.