Early in the morning on July 13, pilots flying over Hidden Creek Lake, located on the Kennicott Glacier, saw that the lake level was starting to go down. Soon its cold, glacier water would raise the level of the Kennicott River. This is known to McCarthy as our annual jӧkulhlaup, defined by Wikipedia as “a type of glacial outburst flood.” It is a glaciological term adopted from Iceland and literally translates as “glacial run.”