 After the volcanic activity of the 2000s , the thickness of the glacier continues to increase at a slower rate of 15 ft ( 5 m ) per year and the glacier continues to advance at 3 ft ( 1 m ) per day . The latest aerial imagery taken in 2012 shows that the glacier has entered the upper reaches of the Loowit Creek canyon and the headwaters of the creek . Ice mixed with rock debris now spills into the canyon and the creek has been pushed to the east . Nearby , on the slopes of the eastern crater wall , the glacier touches one of the rock glaciers and the glacier is very close to merging with the other rock glacier . A medial moraine can be seen at the interface of the eastern and western arms of the Crater Glacier . 
