The Doña Ana Mountains are a mountain range in Doña Ana County, New Mexico. The highest elevation in the range is Doña Ana Peak at 5,835 feet, at 32°27′15″N 106°47′18″W / 32.45417°N 106.78833°W. The Doña Ana Mountains are a small, rugged mountain range in the desert a few kilometers north of the city of Las Cruces, New Mexico and just east …The Doña Ana Mountains are a mountain range in Doña Ana County, New Mexico. The highest elevation in the range is Doña Ana Peak at 5,835 feet, at 32°27′15″N 106°47′18″W / 32.45417°N 106.78833°W. The Doña Ana Mountains are a small, rugged mountain range in the desert a few kilometers north of the city of Las Cruces, New Mexico and just east of the Rio Grande. The range is bounded by escarpments to the east and south. Doña Ana Peak is located in the southeastern part of the range, where it is prominent viewed from Las Cruces, and Summerford Mountain is prominent in the northeast corner of the range. The range is heavily eroded and largely barren of vegetation, exposing some 130 square kilometers of bedrock.