The Hueco Mountains are a range of mountains that rise in southern Otero County, New Mexico and extend south into

Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...

, generally along the El Paso– Hudspeth

county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

line just east of the city of

El Paso, Texas El Paso (; "the pass") is a city in and the seat of El Paso County in the western corner of the U.S. state of Texas. The 2020 population of the city from the U.S. Census Bureau was 678,815, making it the 23rd-largest city in the U.S., the ...

. The highest point of the range is the Cerro Alto Mountain in Hudspeth County. The

Hueco Bolson The Waco (also spelled ' and ') of the Wichita people are a Southern Plains Native American tribe that inhabited northeastern Texas. Today, they are enrolled members of the federally recognized Wichita and Affiliated Tribes, headquartered in Ana ...

, a down-dropped area with an elevation of above sea level, with sedimentary fill nearly thick, lies between the Hueco and Franklin Mountains. Shallow, stony soils in the Hueco Mountains support oak, juniper, and some mesquite. The mountains were part of the Rocky Mountain trend, forced upward as part of the

Laramide The Laramide orogeny was a time period of mountain building in western North America, which started in the Late Cretaceous, 70 to 80 million years ago, and ended 35 to 55 million years ago. The exact duration and ages of beginning and end of the o ...

mountain-building period during the late

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

, 60 to 70 million years ago. The word ''hueco'' is Spanish for hollow, gap, or hole.

References

Mountain ranges of New Mexico Mountain ranges of Texas Geography of El Paso, Texas Landforms of Hudspeth County, Texas Mountain ranges of Otero County, New Mexico Mountain ranges of El Paso County, Texas {{NewMexico-geo-stub