Stac Pollaidh (IPA:[ˈs̪t̪ʰaʰkˈpʰɔɫ̪ai]is a mountain in the Northwest Highlands of Scotland. The peak displays a rocky crest of Torridonian sandstone, with many pinnacles and steep gullies. The ridge was exposed to weathering as a nunatak above the ice sheet during the last Ice Age, while the ice flow carved and scoured the smooth sides of the mountain.