Below is a video of my nephew, DJ riding at the Cajon Pass earlier this week. One unique aspect of the Cajon Pass is that an abrupt climate change from a Mediterranean climate to a Desert climate takes place. When I have ridden there, one minute we would be in desert with limited brush and the next we would be in dense chaparral. I have never seen a place quite like it and I do enjoy riding there.
Due to being formed by the plate tectonics, it also has some unique features such as the Mormon Rocks.
The Cajon Pass has one of the most impressive hill climbs for dirt bikes that I have seen. I can say that I have climbed it twice on my bike. Next time I do the hill climb there will be a camera on top of my helmet.
Here is a video of my nephew making the impressive hill climb.