Helix Flat Avenue is a hiking, biking, and horse trail in El Dorado County, California. It is within Eldorado National Forest. It is 3.2 miles long and begins at 6,325 feet altitude. Traveling the entire trail is 6.4 miles with a total elevation gain of 1,256 feet. Robbs Peak (elevation 6,693 feet) can be seen along the trail.
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