Only the east parking lot off regents rd. is open. Be careful of stumps and low hanging braches. There are some good trails that you have to look for. Also, beware of the gnarly 100 yard chute that looks easy. Some blind corners and some cool tree riding.
Trails branch off into numerous others.
I like to stay to the left when going West, the trails are more demanding. Don't run over the beautiful and harmless snakes in San Clemente and Rose Canyon. Other than that, this is such an awesome trail to be on. I ride these canyons frequently and there are a lot of snakes in the spring time, especially on the narrow paths in San Clemente Canyon.