A cold morning on the trails to the Headwall Lakes access.A cold morning on the trails to the Headwall Lakes access.The Headwall Lakes trail off the snowshoe trail.A warning sign along the Headwall Lakes trail.A cold, snowy hike up the Headwall Lakes trail.Approaching treeline along the Headwall Lakes trail.Hiking up through trees and a lower headwall.Approaching treeline along the Headwall Lakes trail.Cairns mark the way along the route.The lower Headwall Lake with The Fortress in the distance in sun.Views back over the lower Headwall Lake.Views back over the lower Headwall Lake.Ascending to the upper Headwall Lake. The Fortress and South Outlier visible now.The Upper Headwall Lake with The Fortress and South Outlier visible.Hiking above the Headwall Lakes. The Fortress in sun with the South Outlier to the right.Hiking above the Headwall Lakes. The Fortress in sun with the South Outlier to the right.Views over the Headwall Lakes to Murray and Chester (R).Views to the Fortress / Chester col with Gusty and Fortress (R) visible.Ascending scree slopes to the south end of the south outlier.Views of the summit from a high point along the south ridge. The Fortress at left, Kidd to the right and the Fortress ski area at lower right with The Wedge rising over it.