 Turning east once again , SR 78 leaves the Escondido city limits and enters the San Pasqual Valley as it provides access to the San Diego Zoo Safari Park and San Pasqual Battlefield State Park . After leaving the San Pasqual Valley , the road follows a serpentine alignment , heading south to enter the community of Ramona as Pine Street . In Ramona , SR 78 intersects SR 67 and makes a turn east onto Main Street , going through downtown Ramona . The highway leaves Ramona as Julian Road , which continues on a winding mountain alignment through Witch Creek to Santa Ysabel where it meets SR 79 . 
