Yes the park is open from 7 am until sunset every day and the main gate is locked at the top of the hill at that time. Everyone needs to be out by that time.
Yes, they are very adamant about that. That way it is less likely for vandalism to occur and for safety reasons after dark. Besides the water hazard there is an active train line through there.
Indeed... If you are not out at dark you could have gates locked behind you and they may come searching for you. They definitely have a couple rangers and workers that close up and check the area.
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