Box Canyon. It's a historic site along some old wagon trail or mail route or somethin'.
I'm not sure I fully understand this place. There is a well worn trail on the hill above this canyon that was the original trail. Then in 1847 along comes the Mormon Battalion and hacks out enough of the rock walls to fit their wagons through and it becomes the first wagon road into So Cal. That's all according to THIS WEB PAGE anyway.
My problem with that lies in the fact that while the rest of the canyon looks like a nice respectable wagon trail...all of a sudden you come to the fifteen foot of near vertical rock pictured below. How the hell you get a wagon up that? Down it maybe if you put blinders on your horses, but definitely not up it.
I guess flash floods over the last 150 years have taken there toll on this place.