No its only open til 7pm
Have to arrive before Sunset, usually. To park your car. I believe the entrance is all that closes. The rangers' check around regularly, I think.
I believe the actual lookout post is closed at ten. Unless there are rangers watching it, the trail has no blockades.
By this time it's closed to cars. But you could hike it
It closes but I am not sure of the hours.
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