Palo Duro Canyon State Park is a uniquely beautiful state park with numerous hiking and mountain biking trails. Unfortunately, due to recent heavy rains, the hiking and bike trails were closed. We stayed at the Hackberry Campground, which we preferred due to the presence of more trees and, in some cases, vegetation between campsites. We liked campsites 10-18 on the outer edge because of their spacing and vegetation allowing for some privacy. The Mesquite Campground had some great views, but fewer trees. A few of the campsites have partial shade, but most offer little shade other than a covered picnic table. The hiking and off-road bike trails looked interesting. We were here in early September. It was very hot during the day (90's), but cooled down sufficiently at night to turn off our air conditioner.