Mount Rainier All Alpine climbing 3 routes in crag

traverse Cowlitz Glacier to Cathedral Gap. Continue accross the Ingram Glacier to Cathedral Gap. Continue Via the Ingram Glacier to Columbia crest, then accross the summit cone to the true summit

As per Summitpost's description:

"From Camp Muir, the route ascends above the left side of the Cowlitz Glacier or the Cowlitz Cleaver past the "Beehive" at 10,800 ft. The Cowlitz Cleaver is a ragged rocky ridge that divides the Cowlitz and Nisqually Glaciers. The route passes through Camp Misery (11,600 ft) at the base of Gibraltar Rock then traversing left across the narrow and somewhat exposed Gibraltar Ledges to the upper Gibraltar Chute.

The Gibraltar Chute is a 40-50 degree snow slope that leads to the top of Gibraltar Rock at 12,600 feet. This is sometimes referred to as Camp Comfort. From Camp Comfort, ascend the upper Ingraham and Nisqually Glaciers to the crater rim at 14,150ft. Note that this section of the climb is sometimes filled with crevasses and very unstable snow bridges."