Lost Empire Trail is a hiking and horse trail in Santa Cruz County, California. It is within Henry Cowell Redwoods State Park (Fall Creek Unit). It is 5.0 miles long and begins at 1,935 feet altitude. Traveling the entire trail is 10.3 miles with a total elevation gain of 4,368 feet. The Spring? spring can be seen along the trail. There is also an information guidepost along the trail.