Photos: A water-filled crater

A white bark pine tree at Crater Lake's Sinnott Memorial Overlook suffers from disease. A park ranger with the National Park Service said that the tree's health, like others in the area, threatens the existence of the Clark's Nutcracker, one of the most common birds at Crater Lake. The Nutcracker extracts and then re-plants seeds in the tree for nourishment, and as this tree shows, mealtime is over.

Another common species of Crater Lake is the olden-mantled ground squirrel, a tiny brown animal that can be spotted foraging all over the park.

Photo by Stefanie Olsen/CNET News.com