They are only open until 6pm. If you call them ahead of time, arrangements might be possible. I've had rangers do it for me at other state parks.
November 2018 gate was locked at 7pm. Drove 2.5 hours, leaving after work, and arrived at 7:30pm. There needs to be better information about this than, "Gates closed at posted times."
We were very confused by this too. You must get there to check in by 9:30 pm when the office closes. The whole park closes at 10pm. If you were to get in after that you would need to make special arrangements.
They dont lock the gate until 9pm so they should be able to get you checked in if you call and make arrangements.
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