The main area of the park is down in a valley so not good for a sunset if you're wanting to drive to the vantage point. However if you're willing to take a somewhat strenuous hike to the top of the ridge as the other folks have mentioned already, it is a very nice place to catch a sunrise or sunset. I have not seen it myself at those times, but having seen the veiw I know it would be a good place. The problem is hiking up or back in the dark could be somewhat problematic and dangerous and would certainly require a flashlight. Be aware that the park is closing the last I heard in the last few months of 2017 and will be closed for all of 2018 for a major upgrade to the sewage treatment system and the bath rooms and adding a shower house I believe. Due to the extensive nature of the work, I think they plan on closing the entire Park, not just the campground. I would highly recommend going to the DCNR website and checking for news and alerts before you plan a trip there.
Very nice for a sunset at flat rock. Park closes at sundown.
Sunrise or sunset is fantastic, but you'd need to take a moderate hike, about 2 miles, to the outcropping of rocks, which means stepping off about an hour and a half before each. Worth it though!
The small lake would be the only place, but the best place id the view from flat rock the view is great but over a hour walk.
It's stunning
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