There are two ways up, short and steep, or long and rolling with a descent that rocks!
For the long and rolling way - go east from parking area on highway and right at the sign for Thomas Mtn. For the short and steep way - go west from parking area on highway and left on 1st open fireroad
The Trailhead at the top is marked with brown flexpost and surrounding boulders. At 3miles make a hard left at a trail junction.
How to get there:
The trail is in Riverside county on Hwy 74 between Hwy 243 and 371 in Garner Valley.
The trail gets a little loose in summer, but this ride is worldclass, very well known.