I'm camping there Sunday 6/20/19. I was lucky and got the last reservation the day before. Due to it's close proximity to Cherry Springs state park known for it's great stargazing viewing it's hard to get a space when the weather is predicted to be clear as it is for tonight.
You could also camp at cherry springs state park which is very close.
It will be chilly depends on if you have tents or camper but I'm pretty sure you can but you have to make reservations
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