PORTAGE GLACIER, ANCHORAGE, AK - 1985: Chunks of ice from Portage Glacier float as they hit open water in this 1985 Portage Glacier, Anchorage, Alaska, aerial landscape photo. (Photo by George Rose/Getty Images)
PORTAGE GLACIER, ANCHORAGE, AK - 1985: Chunks of ice from Portage Glacier float as they hit open water in this 1985 Portage Glacier, Anchorage, Alaska, aerial landscape photo. (Photo by George Rose/Getty Images)