Where Baldy Mesa Road turns to dirt at Mesquite Street, I parked there to begin the hike. Technically, I could've driven 2 Miles on the dirt road to reach another place to possibly park, but this worked out fine (I was there to hike anyway). The road turns into more of an offroaders dream after two Miles, as evidenced by the offroad vehicle's I encountered there. A bump sits at the edge of the rim overlooking Cajon Pass. This is the summit of Baldy Mesa. A foundation is all that remains on top. Great views make this high desert trek worthwhile.