Nature Walks and Historic Ranch House Tours
at Anderson Marsh State Historic Park

Anderson Marsh Interpretive Association docent volunteers offer monthly guided nature walks and tours of the historic ranch house. A nature walk is held on the second Saturday of each month, except for January, September and December. Walks are sometimes followed on the same day by a tour of the historic ranch house led by trained docent volunteers. The guided walks provide an opportunity to observe wildlife at the Park and learn about their natural habitat, as well as to learn about natural and cultural history and geology of the area.

Walks begin at 8:30. Meet under the big oak in front of the ranch house for the guided walk or ranch house tour. The walks take between 1½ and 3 hours, depending on the route taken. The ranch house tour begins immediately after the nature walk. While rain will cancel the nature walk, the ranch house tour will take place rain or shine, and will take place at 8:30am if weather cancels the walk.

For more information please call 707.995.2658 or email


Descendants of the Grigsby brothers enjoy a tour of the Ranch House,
built by their Grigsby ancestors in 1855.

Nature walkers taking a photo break on the boardwalk at Cache Creek.

A group of “birders” enjoy a Summer’s morning walk on Cache Creek Trail.

During a Ranch House Tour, former Ranger Tom Nixon explains chamber pots.

Tom Nixon “showing and telling” about the outhouses.

AMIA Volunteers Gae Henry and Henry Bornstein dressed in clothes of the historic period, begin conducting a tour of the Ranch House from the front yard.

Descendants of the Anderson Family in front of the Ranch House after enjoying a tour.

For more information please call 707.995.2658 or email