AWS,, I'm having to go from memory here, but I think it's the next exit on I-10, west of the Airport exit from Las Cruces...I know it's a few miles west of Las Cruces...My map program doesn't give exit numbers in that area...
There is a "Tourist" trading post at the exit and you have to take the NW service road to the range..That country is pretty flat and you can see the range from the highway...There are several shooting areas there...Some have canopies over them and some have man made walls on the side for deflecting errant rounds, as well as berms...
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Nature shares her secrets not to those that hurry by, but to those that walk with a happy heart and a seeing eye...