'The Sinks' at Limestone Canyon One of the most iconic locations within the Irvine Ranch Natural Landmarks, Limestone Canyon never ceases to amaze. Located between the rugged Santa Ana Mountains and central Orange County, Limestone Canyon is home to a variety of plants, animals, and unique geological features. Its oak filled valleys and year-round springs made it a popular place for Native Americans and early European settlers to hunt and forage for supplies. Later, it became an important grazing area for ranchers in the region. Today, Limestone Canyon remains one of the most pristine wilderness areas in the county and houses a number of habitat restoration projects to further ensure it biological viability. Over 20 miles of trails crisscross Limestone Canyon, providing hiking, riding, and equestrian opportunities for all levels and interests. You can sign up to participate in a number of activities in Limestone Canyon on LetsGoOutside.org, including Wilderness Access Days. Be sure to check out all this area has to offer on your next adventure, including:
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