We never really got to Aden Crater, but perhaps within 1 mile, when our van (no 4-wheel drive) got stuck in the sand. We did get to see ancient black lava flows and desert countryside and cows. It's about a 40 mile drive outside of Las Cruces. We went with others. All I remember is that one takes Exit 127 off I-10 and about 3 country roads and dirt tracks. We were in a group of 4 vehicles, and 2 didn't make it to the crater. One car had a flat tire and had to put on the spare, but later also got a flat on the spare so had to be abandoned (for awhile). We got stuck in a long patch of sand on the dirt track and needed lots of pushes to get back to firm ground. We parked on the side of the dirt track and started to walk to the crater as we believed it to be 1 mile more. However, we got a cell phone call that the other car needed help -- cell phones did work. So we walked back to our van, took our companions and that car's wheel back to town so our companions could get a new tire and take it back in their pick-up truck (in order to be able to drive their car back to town). We went to lunch in town and called it a day. We did see a convoy of about a dozen vehicles, mostly jeeps with big tires traveling to the crater area as we were walking back to help our companions with the two flat tires. That's clearly the way to go--jeeps with 4-wheel drive and big tires.