Hardy Rock, Mendocino County, California
Left photo by Jay Wilbur; right photo Copyright © 2002-2011 Kenneth & Gabrielle Adelman, California Coastal Records Project, www.californiacoastline.org
NABSQNO 10S-430755-4395530. Hardy Rock is a sea natural arch with multiple openings eroded by wave action through a remnant coastal stack of basalt. It is located a little over 2 miles south of Rockport, Mendocino County, California. It is visible from the Pacific Coast Highway, California 1. Hardy Rock was listed in the Vreeland catalog as number 23-141. The largest opening has a span of about 20 feet.