Triangle Lake holds down the north end of the Caribou Wilderness as Long Lake does the south end. These two are the largest in the wilderness and are about equal in size. A trail circles Triangle Lake. The granite bluff, top left, has a great overlook on the west shore. Black Butte rises to the northwest in this photo and top right. A line of early morning mist, above. A trail from Triangle Lake leads to Widow Lake, left, in Lassen National Park.