Just off the road that takes you to Glacier Point. Reservations not needed, but tough to get on weekends. Get up early and go to Glacier Pount for the sunrise overlooking Half Dome, the Head back towards camp but stop at Sentinel Dome parking. It’s only 2.5 miles round trip to Sentinel Dome and the view is stunning, you’re higher up than Half Dome on one side and El Capitan on the other. We spent very little time in the campground as we were out hiking so much. Get up before dawn if you want to have a parking spot anywhere you want to hike.