U.S. Geological Survey Photographic Library

ID. Jackson, W.H. 24

Tunnel No. 2, the longest on the road, 770 feet in length, cut through reddish and purplish indurated clays, of the Wasatch group of Miocene Tertiary. Summit County, Utah. 1869.

Tunnel No. 2, the longest on the road, 770 feet in length, cut through reddish and purplish indurated clays, of the Wasatch group of Miocene Tertiary. Summit County, Utah. 1869.

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