Mountain bike route boasts 5.5 miles of single track, which winds its way up to the Minaret Vista. Pumice, lodgepole, steep grinds and cambered turns can be expected. Spectacular views await you at the summit. If you'd rather descend this trail, use a shuttle to be dropped at the Minaret Vista, then ride down the Mountain View Trail. When you reach the Earthquake Fault, cross hwy 203 and descend all the way to town via Mammoth Mountain Bike Park's "Downtown" trail. source: fs.usda.gov
Halfway between the Town of Mammoth Lakes and Mammoth Mountain's Main Lodge, turn right a the Earthquake Fault sign and park in the designated area.
http://www.singletracks.com/item.php?c=1&i=10157