along El Camino Viejo (an eastern fork of El Camino Real ), folklore holds Castle Rock as one of Joaquin Murieta 's many bandit camps. Grizzly Adams frequented the area around Castle Rock in 1854, after Murieta's demise. Location: 37° 38' 14.9" N, 121° 29' 26.6" W 06 September 2010 Moving Day!