Yes they are open they are doing limited reservation you need to book on line at the state parks web site. It's usually booked 2 to 3 weeks so you need to plan on a time and pre buy your passes
My family and I was out there a few weeks ago, bought passes for day camp, 10 bucks online. I understand now you can overnight camp if you choose
Last I heard they weren't taking any new reservations. But the office should be open. So maybe look on the website and see.
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