Campground is quite large and in three distinct sections, but one section is 100% seasonal, a second is half seasonal half tents. RV sites are in the "Black Forest" section and are furthest from pool/office. Most are deep back-in; maybe 30 pull-thru. Lots of mature trees. If you don't like the sound of shrieking children you should request a site far away from the playground, which is full of kid friendly structures that gets 'em all wound up.
WiFi service is surprisingly good, with many repeaters scattered around the campground; you'll get strong signal most places. (Total capacity of the campground's connection to the internet is another story; when they're full, you'll have a strong signal, but it'll be slow.)
Perfectly fine as a one-night stop. Away from the freeway, but close to the BNSF railroad mainline and to the airport with commercial, private, and military aircraft taking off and landing. The entire site is dead level, little or no shade, and a bit windy. Surrounded by nothing but industrial sites and big empty. It's ten miles outside of Amarillo, and if you need to be there, this is a fine stop. If your RV needs service, the local Freightliner shop does great work, and there are other truck/motorcoach service facilities in the area.
One 2020 note - staff doesn't wear masks indoors. Most folks in town don't, either.
High up, yes, wooded, yes, but mostly it's an exposed ridge. Getting to/from this campground from either interstate is a tricky drive, especially if you have a wide or long rig. Android maps will get you there, but you have to trust it. I strongly recommend not arriving after dark; roads are narrow, unlit, and very confusing. The approach road to the ridge, on the campground site, has a climbing switchback turn; it's signed "Maintain Speed Through The Turn", but be prepared.
Site amenities are pretty basic. Wifi is great during the day, but at night, when everyone tries to stream netflix, it gets pretty bad.
It's a long backtrack from the interstate exit. Pullthru site was very roomy.
So very stark, so very bare. Lots of long-term stayers, lots of RV storage (and one boat). We stayed an extra night due to exceptionally high winds (sustained 40 MPH, gusts to 60 MPH), which aren't uncommon. We stayed at one of the new Patio sites, which included a 6 ft picket fence along both sides of the campsite; those were a nice windbreak.
Stunning campsite. We took one of the new "patio" campsites, which came with super easy exit from the KOA in the morning. Great mountain views, very friendly and helpful (and masked) staff. Absolutely worth a visit.
Super easy on/off the interstate, easy access to grocery shopping/Walmart. Their website has drone footage showing the site from air, including the interstate approaches; if you're arriving after dark, watch the video before you set it, it will be a huge help.
The park itself is stark and tight and does more business as long-term storage than camping. The sanitary hookups were a bit weird; two sewer caps to which you might think to attach, but only one is actually the sewer.