The Tres Hermanas (Three Sisters) range is a series of 3 mountains about 7 miles north of Columbus, New Mexico. My guess is that they are about 1000 feet above the surrounding terrain of the Chihuahuan desert. The range is only about 10 miles from the U.S./ Mexico border. To watch a very short Youtube movie of the climb, copy and paste this:
http://www.youtube.com/watch?v=f659GvcIlWA