Glimpses of our national parks .. . ^ Itis far less at the margins, its speed being retarded by the frictionof the sides. It is one of the great pleasures of a visit to Mount Rainier NationalPark to wander over the fields of snow and climb out on the NisquallyGlacier and explore its crevasses and ice caves. 26 OUR NATIONAL 1holograph by Curl is ^ Milki, Seaitk- Mount Rainier, Showing Beginning of Nisquatxy GlaciekView from wilil-flower-carpeted Paradise Valley Like all glaciers, the Xisqually gathers on its surface masses ofrock with which it strews its sides just as rivers of water st
Glimpses of our national parks .. . ^ Itis far less at the margins, its speed being retarded by the frictionof the sides. It is one of the great pleasures of a visit to Mount Rainier NationalPark to wander over the fields of snow and climb out on the NisquallyGlacier and explore its crevasses and ice caves. 26 OUR NATIONAL 1holograph by Curl is ^ Milki, Seaitk- Mount Rainier, Showing Beginning of Nisquatxy GlaciekView from wilil-flower-carpeted Paradise Valley Like all glaciers, the Xisqually gathers on its surface masses ofrock with which it strews its sides just as rivers of water strew theirbanks with logs and floating debris. These are called lateral moraines,or side moraines. Somotime> glaciers build lateral moraines mileslong and over a thousand feet high, as you will see when you visitthe Eocky Mountain National Park. The rocks which are carried in midstream to the end of the glacierand dropped when the ice melts are called the medial or middlemoraine. The end, or snout, of the glacier thus always lies among a greatmass of rocks and stones. The Xisqually River flows from a cave inthe end of the Xisqually Glaciers snout, for the melting begins milesupstream under the glacier. The river is milky white when it firstappears because it carries sediment and powdered rock, which, how-ever, it deposit
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