National Parks
Portfolio

Cover

Contents

Foreword

Parks vs Monuments

Acadia

Bryce Canyon

Carlsbad Caverns

Crater Lake

General Grant

Glacier

Grand Canyon

Grand Teton

Hawaii

Hot Springs

Lassen Volcanic

Mesa Verde

Mount McKinley

Mount Rainier

Platt

Rocky Mountain

Seqoia

Wind Cave

Yellowstone

Yosemite

Zion

Monuments

National Parks Portfolio

Crater Lake

LOOKING DOWN INTO THE CRATER OF WIZARD ISLAND
Photograph by U.S. Reclamation Service

VIEWED FROM THE RIM

SEVERAL days may profitably be spent upon the rim of the lake, which one may travel afoot, on horseback, or by automobile. The endless variety of lava formations and of color variation may be here studied to the best advantage.

The temperature of the water has been the subject of much investigation. The average observations of years show that, whatever may be the surface variations, the temperature of the water below a depth of three hundred feet continues approximately thirty-nine degrees the year around. This dis poses of the theory that the depths of the lake are affected by volcanic heat.

"Apart from its attractive scenic features," writes J. S. Diller of the United States Geological Survey, "Crater Lake affords one of the most interesting and instructive fields for the study of volcanic geology to be found anywhere in the world. Considered in all its aspects, it ranks with the Grand Canyon of the Colorado, the Yosemite Valley, and the Falls of Niagara, but with an individuality that is superlative."

PINNACLE FORMATIONS IN SAND CREEK VALLEY, FORMED BY EROSION
Copyright by Patterson

Continued >>>

Last Modified: Mon, Oct 31, 2002 10:00:00 pm PDT
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