Arroyo Tapiado is a hiking, biking, and horse trail in San Diego County, California. It is 7.8 miles long and begins at 671 feet altitude. Traveling the entire trail is 15.6 miles with a total elevation gain of 1,518 feet. Along the trail there are cave entrances.
Arroyo Tapiado Professional Reviews and Guides
"Along the canyon walls of Arroyo Tapiado (“Mudwall Wash”), weathering and erosion acting on friable sedimentary rock have produced a strange kind of topography known by some geologists as pseudokarst. Like karst topography, which is associated with limestone caverns and sinkholes, this pseudokarst landscape contains caves, subterranean drainage systems, and “blind valleys” that end in “swallow holes.” The loop hike described here— “strenuous” only because of its excessive length—also includes narrow, twisting Arroyo Seco del Diablo (“Dry Wash of the Devil”), a.k.a. Arroyo Diablo, with plenty of opportunities for side trips into narrow tributary ravines."
--Jerry Schad, Afoot & Afield: San Diego County (Wilderness Press).
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