Mount Ellsworth (Utah)
mountain in Garfield County, Utah, United States
Mount Ellsworth is an 8,235-foot (2,510 m) elevation summit located in Garfield County, Utah, United States. Mount Ellsworth is part of the Henry Mountains. It is situated in a dry, rugged, and sparsely settled region west of Glen Canyon National Recreation Area, on primitive land administered by the Bureau of Land Management. Precipitation runoff from this mountain drains into tributaries of the nearby Colorado River, which here is Lake Powell eight miles to the east of this mountain.
History
The American geologist Grove Karl Gilbert surveyed this area in 1875 and 1876, and published his findings in 1879 as a monograph, The Geology of the Henry Mountains. The term laccolith was first applied as laccolite by Gilbert after his study of intrusions of diorite in the Henry Mountains. Mount Ellsworth's name appeared on an 1875 map, but the origin is a mystery. One possibility is Elmer E. Ellsworth, (1837–1861). Gilbert did name nearby Mount Holmes, four miles to the northeast.
Climate
Spring and fall are the most favorable seasons to visit Mount Ellsworth.
Begin with the source’s own compact description: “Mount Ellsworth (Utah)” is mountain in Garfield County, Utah, United States. The dossier treats that line as a proposition to test through Mount, Ellsworth and Utah, not as a finished interpretation.
Why this record matters
The phrase “mountain in Garfield County, Utah, United States” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 15, 2026. The linked authority identifier is Q49052589. Authority coordinates are 37.746, -110.620. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1875, 1876, 1879 and 1837.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Three-step research path
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Questions for further research
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This entry incorporates text from “Mount Ellsworth (Utah)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.