Elephant Butte is a

summit A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used only for ...

that is now in the

Elephant Butte Reservoir Elephant Butte Reservoir is a reservoir on the southern part of the Rio Grande in the U.S. state of New Mexico, north of Truth or Consequences, New Mexico, Truth or Consequences. The reservoir is the 84th largest man-made lake in the United Sta ...

and within the

Elephant Butte Lake State Park Elephant Butte Lake State Park is a state park of New Mexico, United States, located north of Truth or Consequences along the shore of Elephant Butte Reservoir in Sierra County. Description The park is the largest state park in New Mexico and ...

Sierra County, New Mexico Sierra County () is a county located in the U.S. state of New Mexico. As of the 2020 Census, the population was 11,576. Its county seat is Truth or Consequences. Geography According to the U.S. Census Bureau, the county has a total area of , ...

. It has an elevation of . It was named for its shape, which is said to look like an

elephant Elephants are the largest living land animals. Three living species are currently recognised: the African bush elephant ('' Loxodonta africana''), the African forest elephant (''L. cyclotis''), and the Asian elephant ('' Elephas maximus ...

. Originally a tall

butte In geomorphology, a butte ( ) is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and table (landform), tablelands. The word ''butte'' comes from the French l ...

along the east bank of the

Rio Grande The Rio Grande ( or ) in the United States or the Río Bravo (del Norte) in Mexico (), also known as Tó Ba'áadi in Navajo language, Navajo, is one of the principal rivers (along with the Colorado River) in the Southwestern United States a ...

, Elephant Butte became an

island An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...

in Elephant Butte Reservoir upon the completion of the

Elephant Butte Dam Elephant Butte Dam or Elephant Butte Dike, originally Engle Dam, is a concrete gravity dam on the Rio Grande near Truth or Consequences, New Mexico, in the United States. The dam impounds Elephant Butte Reservoir, which is used mainly for agricu ...

. The recent lowering of the level of the reservoir has made it a

peninsula A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula. Etymology The word ''peninsula'' derives , . T ...

. A nearly-complete 3-million-year-old

stegomastodon ''Stegomastodon'' ('roof breast tooth') is an extinct genus of gomphotheres. It ranged throughout North America from the Pliocene (early Blancan ~4 Ma), to the Early Pleistocene (early Irvingtonian, ~1.2 Ma). The former South American species h ...

fossil was discovered at Elephant Butte by campers on June 9, 2014.New Mexico bachelor party finds 3-million-year-old stegomastodon fossil, Fox News, June 13, 2014
from foxnews.com, accessed December 27, 2016

References

External links

Mountains of New Mexico Landforms of Sierra County, New Mexico Mountains of Sierra County, New Mexico {{US-mountain-stub