Orosco Ridge is a multi-use OHV area in San Diego County. It is an excellent spot for beginners to explore their 4x4's abilities. Please note that base maps will show this as a through road, but it is gated at the 6-mile mark and run as an out-and-back. While popular, there's not a whole lot to see at this location, but it is one of the spots that's closest to San Diego City, usually open, and can satisfy the need to get your tires on some dirt.
Although considered easy in dry conditions for any high-clearance vehicle, the road is steep, rutted, and bumpy, with narrow sections and limited passing opportunities. Stock Tacomas and 4-Runners should be able to handle the depth of the ruts, but crossover SUVs may scrape or get stuck. Disabling traction control, airing down, and having 4WD make for a smoother experience. Wet conditions will make the road considerably more difficult.
The area used to be popular for target shooting, and there is plenty of evidence of that. Some spots appear to be very primitive campsites or lookout points, but there are also signs indicating the surrounding area has high levels of lead.