Digital Commonwealth — Boston Public Library
Grotto Spring, Grand Cañon, Colorado River
O'Sullivan, Timothy H., 1840-1882 · [1871]
Grotto Spring, Grand Cañon, Colorado River. The water flows from the rocks above and the umbrella-shaped rock about it is tufa, that has been formed by deposition from the mineral constituents of the water. The light spot seen through and beyond is the sand-beach of the river. Looking through this Grotto is seen in the distance the walls of the Grand Cañon, 3,500 feet in height on either side.
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