Lovely
Gallo Campground is the only campground in Chaco Canyon National Park so reserving ahead of time or getting there earlier in the day depending on the season are very important. The park is very remote so it's a long drive on a potentially very rough road to get in but once you're there the route is well worth the visit.
I visited on a Wednesday night in mid October. The campground had filled up by about 2pm Wednesday and but was full by about 11am on Thursday.
There is currently no potable water at the campground but water is available at the Visitors Center a short drive down the road. There are however flushing toilets and running water in the bathrooms. The campsites each have a picnic table and fire pit. I thought the set up of the tent only area was interesting. There is a parking lot area with sites surrounding it on three sides. The set up allows for privacy between the sites which are nestled in among the rocks and plants as well as ruins!
I wish I had spent more time in Chaco Canyon exploring the sites, hiking, and going on tours. The daily tours and ranger talks provide more insight into the canyon's history than you can get with the self guided booklets.