Discover the geological wonders of Yellowstone National Park with this vintage stereoview card from the Keystone View Company. This fascinating stereograph, numbered 135 (and 29168), captures the iconic Liberty Cap, an extinct hot spring cone situated near Terrace Mountain in Wyoming. The 3D view showcases the unique limestone formation rising prominently from the landscape, with the historic Mammoth Hotel visible in the background, providing a glimpse into the park's early 20th-century appearance.The reverse of this stereoview offers a detailed description titled "LIBERTY CAP, FOOT OF TERRACE MOUNTAIN, YELLOWSTONE PARK." It describes Liberty Cap as 38 feet high and 20 feet in diameter at its base, explaining its formation through calcium carbonate deposits from hot springs, with algae contributing to its distinctive mineral layers. The text also mentions Prof. F. V. Hayden, the discoverer, and references a smaller nearby formation called the Giant's Thumb, along with the surrounding calcium carbonate terraces resembling fresh snow. This historical 3D view, copyrighted by the Keystone View Company, offers a captivating piece of natural history and a unique collectible for enthusiasts of stereoviews, Yellowstone, and geological formations. The card features a standard curved mount, characteristic of the era, and was published by the Keystone View Company with offices in Meadville, Pa., New York, N. Y., Chicago, Ill., London, England.
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