[3] It connects the Los Angeles Basin with the Antelope Valley and western Mojave Desert.

It is used primarily for recreation, although a significant portion of its traffic comes from commuters living in the Antelope Valley.

If you stop and park at the Info Center, you can see the trace of the San Gabriel Fault by looking east up the Arroyo Seco toward Red Box.

It used to have a fire lookout tower that was visible from the valley floor, but now has the Pines Picnic Area, looking out over the fault trace northwest through Clear Creek.

From this point, the Angeles Forest Highway follows the west side of Mill Creek.

The hillsides once were covered with chamise, manzanita, and yucca but the vegetation as well as the Hidden Springs Cafe were destroyed by the 2009 Station Fire.

At the westside turnout of Baughman Springs, is an exposure of white-colored anorthosite, a rock 1.22 billion years old, which is also found on the lunar highlands.

There was once another convenient rest stop with shade, restrooms and picnic tables, but were all destroyed by the Station Fire in August 2009.

After Mill Creek Summit, the Angeles Forest Highway crosses a drainage divide.

Emma Road and the Angeles National Forest boundary, goes through pinyon pine and California juniper woodland.

On the west side is an Edison Company substation, the goal of the original pole line road.

Power is brought in from sources north and east of the mountain range and transferred on into the Los Angeles basin.

On its final leg approaching Vincent Junction, the Angeles Forest Highway crosses the wide Soledad Pass, 3,220 feet (980 m), also used by the railroad and California State Route 14 (Antelope Valley Freeway).