No, gates are locked. Besides it's very dangerous
No. Once the park is closed, no one is aloud anymore, besides it could be really dangerous due to night animals and falls.
No, the gates are locked at closing time. You could hike in but I don't think it's legal to do so.
Not through the main entrance, no. But there are trails into black diamond from other parks, that are not controlled.
No. Closing time
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