The proper name of A Mountain is Tortugas Mountain. It's usually called A
Mountain because of a large "A" formed with limestone boulders on the west side.
Unlike the Organ Mts. just east, A Mountain is limestone rather than igneous rock.
Bishop's Cap, just southwest of the main body of the Organ Mts., is also
There are two explanations for the "A" on A Mountain. The less
interesting is that it stands for "Aggies", the rather unfortunate name of the NMSU
athletic teams. The explanation I prefer is that they put the "A" up back in the
1970's and add a letter every time the football team wins.
The southeast side of A Mountain, seen from Bishop's Cap with Las Cruces sprawling
beside it, 10/16/05.
The university's observatory on the top of A Mountain, 9/25/04.
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