Who Built the Sibley Labyrinth?

Sibley Volcanic Regional Preserve 6800 Skyline Blvd, Oakland, CA, United States

She built the Sibley labyrinth “as a gift to the world” in 1989. On a 3-mile hike join Helena Mazzariello, the original builder, as she unravels mysteries and myths about labyrinths, their spiritual properties, and how she (secretly) created ours. … Read more

Free

Pond Farm Tour

Stewards of the Coast and Redwoods 17000 Armstrong Woods Rd., Guerneville, CA, United States

Join a docent-led tour of Pond Farm Pottery and Immerse yourself in the history and natural beauty of this significant cultural site, listed on the National Register of Historic Places and a National Historic Landmark. Learn about the dreams and … Read more

$25

Vasco Caves Regional Preserve Tour

Round Valley Regional Preserve 19450 Marsh Creek Rd, Brentwood, CA, United States

Join this tour in celebrating National Native American Heritage Month by hiking 2-3 miles through this wild and windswept land which is sacred to local California Indian communities and a refuge for golden eagles, fairy shrimp, and tiger salamanders. The … Read more

Vasco Caves Regional Preserve Tour

Round Valley Regional Preserve 19450 Marsh Creek Rd, Brentwood, CA, United States

Join this tour in celebrating National Native American Heritage Month by hiking 2-3 miles through this wild and windswept land which is sacred to local California Indian communities and a refuge for golden eagles, fairy shrimp, and tiger salamanders. The … Read more

History Hike ABOVE the Mines!

Black Diamond Mines Regional Preserve 5175 Somersville Road, Antioch, CA, United States

Black Diamond Mines Regional Preserve was once teeming with thriving communities. Join a Naturalist on a 2-3 mile hike to learn about the richness of the coal and sand mining history on a hike above the mines. No underground mine … Read more

Free