The Lopez Canyon Backpack is designed to be done overnight and has a duration of about 10 backpack hours. It is intended to enhance knowledge and appreciation of the relationships between land and water are the variety of uses that man has devised for these two primal natural resources. The start is Lopez Canyonwhere Lopez Canyon Roadturns north-west, 2.9 miles beyond the gate entrance for Camp French. The route travels up Lopez Canyon for 4.0 miles along the unimproved Lopez   Canyon Road to the Big Falls Canyon trail junction. One option is to visit the Big Falls along the 1.2 mile side-trail. The backpack continues up Lopez Canyon along U.S.F.S. trail for 3.2 miles to the primitive Sulfur Pots Campground with its characteristic odor. Upper Lopez Campground is located another 1.0 miles north along the trail. The overnight stay can be done at either Sulfur "Pots or Upper Lopez Campgrounds. The next day, continue on the trail about 0.9 miles above Upper Lopez Campground; then the Canyon and trail take an abrupt turn to the West. Continue on the trail 2.1 miles upslope to the U.S.F.S. Trailhead on the East Cuesta Ridge. Follow the East Cuesta Ridge in a north-westerly direction for 4.8 miles to finish the backpack at the Cuesta Pass gate.

WARNING: THIS BACKPACK SHOULD NOT BE ATTEMPTED IN RAINY WEATHER; BACKPACKING IN THE CANYON BECOMES VERY HAZARDOUS UNDER THIS CONDITION