Starting from the east, on Fullerton Rd, this dirt access road is wide but steep. Access the trail by squeezing around the swinging gate at the trail kiosk, and take the left-hand road up, beneath the trees. Maybe a quarter-mile into the climb there's a short, connecting singletrack off the left-hand side of the road, Nogales Trail
, that descends to another access road below, Powder Canyon Rd
Staying on Black Walnut, the wide road climbs about a half-mile to an intersection. Black Walnut continues to the left (up to the right is an access road servicing two huge power line towers. At the foot of the far right tower is a singletrack that connects to Schabarum Trail Extension
If you stay on Black Walnut, from that point it descends through a very nice section with a lot of trees, eventually joining with Powder Canyon Rd
. From there, to the right is an intersection with Purple Sage Trail
. To the left, Powder Canyon Rd
descends very easily beneath the trees to the parking areas.