It is truly a sad thing to see such disrespect for our National Treasures. Nearly as bad is all the litter people leave behind. Two springs ago we were visiting the Wichita Mountains Wildlife Refuge in SW Oklahoma. While there a large group of about 30 people showed up. They were loud, played very loud music and even invaded the picnic spots of others including ours by kids running around and asking for handouts of soft drinks and such. When their outing was over and they left the area, they left all (and I mean All) of their trash on the ground and on the tables. Trash receptacles were within 20'. It was the worse mess I have ever witnessed in such a setting. I thought about that television commercial from the 70's where the Indian looked at all the litter and a tear ran down his cheek. I reckon that image came to me because it was a Native American church group. Please don't label me as racist. That I am not! Just sharing the truth of what I saw.