Photos, route and an account of a winter solstice round of Toll an Lochain, An Teallach in Wester Ross. An Teallach is one of the finest mountains in the British Isles and the round of Toll an Lochain takes in the spectacularly jagged skyline of Corrag Bhuidhe, Lord Berkeley’s Seat and Sgurr Fiona and the mountains highest peak, Bidein a’ Ghlas Thuill.