No there is no overnight parking. It is only open from like 9am to 5pm. And I was there on April 29th. It may be that it is only open weekends til later in May?? The new entrance fee for one day is $7.00.
I don't remember ..you do pay for parking but its cheap, like 5 or less. I think its part of recreation.gov and if you pull it up it says closed till May 24th and I do not see camping on the list and I would suspect no parking over night in that case
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