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Table Rock is interesting to look at and to look from. This sandstone butte rises about 900 feet above the valley floor. On top is a 60 ft tall lighted cross that was erected in 1956. The cross is on a patch of property that is technically publicly accessible private property belonging to the Idaho Jaycees. Access to Table Rock is free and permitted during hours of daylight. It offers an excellent view of the Treasure Valley. There is ample room for parking, but there are no restrooms or other facilities on top.
You can drive to the top of Table Rock by taking Reserve Street to Shaw Mountain Road, to Table Rock Road. You can hike to the top, starting from the Old Idaho Penitentiary. The trail is about 1½ miles each way, and there is that 900 ft elevation gain. Winter is often not a good time to do this hike, as some sections of the trail get slippery from snow or mud.
The proximity of the Old Penitentiary to Table Rock is no coincidence. It is built from sandstone quarried from Table Rock.