Turn right here and a few yards to the left of the road is a dirt road. This is the starting point of the Proctor Valley Trail. The trail starts out with low grade climbs and short downhills for the first 6 miles. The trail is bordered by two mountain ranges, Otay Mountains to the south and some mountain to the north with the radio towers. For its obvious reasons.
Wild dogs do appear at times especially at the summit.
I haven't reached the end of this trail. Because from the summit, the trail drops down a curvy path down to who knows where. I'll give an update when I have enough fuel to take it all the way. Anyway, this trail is single track and the condition changes from top to bottom. From dirt, boulder, gravel, huge dips, ridges and mud at times.