Read this fantastic article on Carlsbad Caverns, http://www.nzherald.co.nz/travel/news/a ... d=11609757
, and besides that, vicariously reading some of the tales of the caving ranger, Mark Joop, talk away.
What's interesting is to see the fares and the reduction in coming to the U.S. and the amount deducted going back to Kiwi-land. A great place in itself, as Jansen would attest to, I'm sure. Love to go back there.