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Photo courtesy of OC Parks.
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History

In 1973 the Starr Foundation deeded the northern 3,779 acres of the ranch to the National Audubon Society for use as a wildlife sanctuary. In late 1973 and early 1974 the Orange County Board of Supervisors, under the direction of Chairman Ronald W. Caspers voted to purchase the southern 5,500 acres of the ranch for use as a public recreation facility. On April 12, 1974 the Starr Viejo Regional Park was opened as a primitive, wilderness day use and camping facility. In June of 1974, Ronald W. Caspers, members of his family and friends were lost at sea in rough waters off the coast of Baja, California. On August 20, 1974 the Orange County Board of Supervisors changed the name of the park to Ronald W. Caspers Wilderness Park in honor and recognition of his foresight in acquiring and preserving this area of quality wilderness. In 1984 an additional 2,100 acres was acquired from the O'Neill Ranch bringing the park's total acreage to 7,600. This 2,100 acre addition was achieved in lieu of open space requirements for development occurring around the Arroyo.

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Organization

OC Parks

The 26-facility county parks system includes the Irvine Ranch Open Space, comprising Limestone Canyon, Weir Canyon and Fremont Canyon nature preserves, as well as Black Star Canyon Wilderness Park.

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Location

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Upcoming Activities

Join us at Caspers Wilderness Park

Join us for an unforgettable evening under the stars at Ronald W. Caspers Wilderness Park! The Space Ranger Program and Starr Party, hosted by OC Parks staff and volunteers, offer fun and learning for families and space enthusiasts alike. No...

Date:
Sat, 08/23/2025
Time:
6:30 pm - 9:00 pm
Where:
Caspers Wilderness Park
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Registration:
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Join us for an unforgettable evening under the stars at Ronald W. Caspers Wilderness Park! The Space Ranger Program and Starr Party, hosted by OC Parks staff and volunteers, offer fun and learning for families and space enthusiasts alike. No...

Date:
Sat, 09/27/2025
Time:
6:30 pm - 9:00 pm
Where:
Caspers Wilderness Park
Difficulty Rating:
1
Minimum Age:
All Ages
Family Friendly:
Yes
Registration:
Registration Opens on 09/13/2025 at 12:00am
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