National Geographic : 1963 May
KODACHROMEBY LILA M. BISHOP n N.G.S Human toboggan skims down a snowy slope near Paradise Glacier. The Rainier Guide Service rents pants with plastic seats for this sport, called "tin pants" sliding. Frozen grotto lures vacationists to the depths of Paradise Glacier. Flares illumi nate the passageway and reveal how melt ing etches fairyland patterns on walls and ceilings. Filtered sunlight sometimes tints NANA GEOGRAPHC SOCY the interior a luminous blue. EKTACHROME BY BOB AND IRA SPRING R N.G.S. Wind and Water Carve a Cave in Paradise Glacier Symptom of a melting glacier, a cave such as this gets its start when frigid water erodes a tunnel beneath the ice. Air flows in and enlarges the opening. Shape and size of the cavity change from year to year. In time, ceilings collapse. Park rangers close such caves to visitors at the first sign of weakening. Hikers from Paradise Inn ad mire nature's handiwork. Icy wa ter cascades from the overhang. Even on the hottest days visitors need jackets in the caves. Sub glacial stream in the foreground flows into Paradise River.