L-67 Extension is a hiking, biking, and horse trail in Miami-Dade County, Florida. It is within Everglades National Park. It is 5.4 miles long and begins at 5 feet altitude. Traveling the entire trail is 10.9 miles with a total elevation gain of one foot. The S-346 culvert, the L-29 dike, and the S-333 spillway are near the trailhead.
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