We stayed at Carlsbad KOA which is actually about 45 minutes to an hour drive to the Caverns. There are parks a lot closer, but we would not have wanted to stay at any of them. There is also a Escapees park nearby the KOA, but we did not check it out.
Honestly it was one of the nicest parks we have stayed at and we normally are pretty picky about where we stay, but like most KOAs not cheap. Nice large spaces, neatly maintained, nice laundry, good dog park, decent WIFI, good 50 AMP service and spotless bathrooms. The office personnel were professional and friendly. At the time we were there, there had been torrential rains thru the area and the area by the office for check in did have some potholes open up, but other than that the roads where well maintained and easy to navigate. They provided pizza and bbq meals that you could have delivered to your RV or eat in the meeting area by the office.
