http://www.thecleanestline.com/2009/04/it-takes-a-village.htmlFrom Lynn Hill: "In the campground at Hueco Tanks, the kids were free to run about from one site to the next playing games, dancing, sharing meals, bicycles, coloring books and roasting marshmallows around a campfire (though we had to go outside the park to have a campfire since the carbon from campfires interferes with the carbon dating procedure used to evaluate the ancient artifacts in this natural historic park)." Less