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The keystone (shown in red) of an arch Dropped keystone at Colditz Castle. A keystone (or capstone) is the wedge-shaped stone at the apex of a masonry arch or typically round-shaped one at the apex of a vault. In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to ...
Keystone is a city in McDowell County, West Virginia, United States. Per the 2020 census , the population was 176. [ 5 ] Keystone is one of the few municipalities in West Virginia with an African-American majority, with 65 percent of the residents being black.
Keystone Resort is a ski resort located in Keystone, Colorado, United States. Since 1997, the resort has been owned and operated by Vail Resorts . It consists of three mountains (Dercum Mountain, North Peak, and the Outback) and five Bowls (Independence, Erickson, Bergman, and North and South Bowls).
Keystone species, species that have a larger effect on their environment than is purely due to their abundance; Operation Keystone, during World War II; Keystone, a variety of screwdriver blade "Keystone", a descriptive reference to the Book of Mormon; The Keystone, journal of the Pennsylvania Railroad Technical and Historical Society
Design of the keystone symbol on the Pennsylvanian government's website [1]. The keystone symbol is the name commonly given to the de-facto state emblem of Pennsylvania. [2] It is a stylized keystone (or capstone), an architectural term for a wedge-shaped stone placed at the top of an arch. [3]
Keystone is a town in the Black Hills region of Pennington County, South Dakota, United States.The population was 240 at the 2020 census. [5] It had its origins in 1883 as a mining town, and has since transformed itself into a resort town, serving the needs of the millions of visitors to the Mount Rushmore National Memorial, which is located just beyond the town limits.
The Keystone-Cushing pipeline phase connected the Keystone pipeline (phase 1) ... There is a long history of opposition to colonialism by indigenous people. In the ...
GreatWarin3D.org's Keystone View Company history page is available on the site, as is a spreadsheet documenting known World War I views; Stuart A. Rose Manuscript, Archives, and Rare Book Library, Emory University: World War I stereographic library, 1918-1921; Keystone Lantern photographic slide collection, at the University of Maryland libraries