Recently cacher yourname1 placed several caches in this area. We found them, and in the process, re-discovered this fantastic "wilderness" area in the middle of the city!
You may park at the end of Via Tejon (N 33° 48.029 W 118° 23.135) and use the trailhead there to access this and the other nearby caches. Or, you may park near the lower trailhead for our Queen's Necklace View series (N 33° 47.794 W 118° 22.966). This hide is only 633' from GC21RRQ, but we haven't tried hiking in from that direction.
GPS reception may be spotty, due to the tree cover. Please use the natural camo to cover the cache so that it can't be spotted from the trail.
Have fun!