The back of this stereograph made between 1865-1870 reads:No. 190Monument Series—The Sentinel.
The back of this stereograph made between 1865-1870 reads:No. 190Monument Series—The Sentinel.The Monument region is gaining a world-wide reputation as among the greatest geological wonders and curiosities on the Continent. They belong to the cretaceous group of rocks. They consist of columns of soft white chalk conglomerate, capped with a hard feruguneous one. The action of the elements for the countless ages of the past has carved out these monuments, towers and ruins for the wonders of the present day. Some of them are a hundred feet in height. -- source link
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