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Bluff above a stream near Rawson's Mill. The thick ledge at the summit is Niagara limestone. Iowa, late 1890s or early 1900s
The height from the level of the stream to the line of contact is 94 feet.
Cliff above Rawson's Mill. The thick ledge at the summit is Niagara limestone. Iowa, late 1890s or early 1900s
The height from the level of the stream to the line of contact is 94 feet.
Bluff above a stream near Rawson's Mill. The thick ledge at the summit is Niagara limestone. Iowa, late 1890s or early 1900s
The height from the level of the stream to the line of contact is 94 feet.
Cliff above Rawson's Mill. The thick ledge at the summit is Niagara limestone. Iowa, late 1890s or early 1900s
The height from the level of the stream to the line of contact is 94 feet.