Ugly Mountain is a summit in

Pendleton County, West Virginia Pendleton County is a county located in the U.S. state of West Virginia. As of the 2020 census, the population was 6,143, making it the second-least populous county in West Virginia. Its county seat is Franklin. The county was created by the V ...

, in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. With an elevation of , Ugly Mountain is the 507th highest summit in the state of West Virginia. Ugly Mountain is a

volcanic neck A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are ...

with a

diatreme A diatreme, sometimes known as a maar-diatreme volcano, is a volcanic pipe formed by a gaseous explosion. When magma Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the ...

breccia Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of di ...

that formed during the Middle Eocene.Garner, T.E., 1956, The igneous rocks of Pendleton County, West Virginia: West Virginia Geological and Economic Survey, Report of Investigations No. 12, 31 p
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References

Mountains of Pendleton County, West Virginia Mountains of West Virginia Volcanism of West Virginia Volcanoes of the United States {{PendletonCountyWV-geo-stub