This Secluded Campsite in Pennsylvania Harbors Some of the World's Best Stargazing

All campers work together in unison to keep the area as dark as possible for prime star viewing. So if anyone needs a little help walking back to their campsite or locating their possessions, they only use a red flashlight. Red is the dimmest visible light the human eye can see, so it interferes with the starry skies the least.