Bobblehead - Unarmed
The location of Rockopolis as seen on the world map
When words fail, there's always fists”
Inside a cave directly north of Girdershade and directly west of Smith Casey's Garage. In a forked valley which is a "random encounter" location, look for a big rock under a string of tattered black banners. At night, light visibly emits from the rock, making it easier to spot.