So take them to a kiddy park next time. The Devil's Den area should relect the way it looked at the time. It was not created as a kid's playground. Perhaps you want them to add swing sets and monkey bars, but I don't.
It isn't just the kids who could use some shade on a hot summer day (which is when most people travel to Gettysburg)
It's also the elderly. Pregnant women.
You get the picture.
Nothing wrong with leaving a little shade.
Having a bad day are you?