The airport isn’t very secret...
http://www.gcr1.com/5010web/airport.cfm?Site=NM53&AptSecNum=0
..and a 5500 ft runway at an altitude of 6300 ft. isn’t that long on a hot summer NM day.
I live in NM and I looked at that site on Google Earth. Some very interesting stuff - like a large church-like facility literally out in the middle of nowhere. Those weird diamonds with large circles are near the strange church-like facility. Does not look like any easy way to get there besides by plane. The road from to the big circles is a road that starts right at the north end of the runway.