Reinhardt Redwood Park in Oakland in Alameda County, California — The American West (Pacific Coastal)

Site of Blossom Rock Navigation Trees

Photographed by Andrew Ruppenstein, March 31, 2013

1. Site of Blossom Rock Navigation Trees Marker

Inscription. Until at least 1851, Redwood trees on this site were used as landmarks to avoid striking the treacherous submerged Blossom Rock in San Francisco Bay west of Yerba Buena Island. Although by 1855 the original stems had been logged, today's trees are sprouts from their stumps.

California Registered Historical Landmark No. 962
Plaque placed by the State Department of Parks and Recreation in cooperation with the East Bay Regional Park District, August 23, 1986.

Erected 1986 by California State Department of Parks and Recreation and the East Bay Regional Parks District. (Marker Number 962.)

Topics and series. This historical marker is listed in these topic lists: Environment • Horticulture & Forestry • Waterways & Vessels. In addition, it is included in the California Historical Landmarks, and the Historic Trees series lists. A significant historical year for this entry is 1851.

Location. 37° 48.648′ N, 122° 10.471′ W. Marker is in Oakland, California, in Alameda County. It is in Reinhardt Redwood Park. It can be reached from Skyline Boulevard half a mile north of Joaquin Miller Road. Touch for map. Marker

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is at or near this postal address: 10570 Skyline Boulevard, Oakland CA 94611, United States of America. Touch for directions.

Regionally, this marker is in California’s San Francisco Bay Area

and on the Coast Ranges.

It is also on the American Pacific Coast.

Globally, it is in North America,

on the Ring of Fire,

in the Pacific Rim,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within one mile of this marker, measured as the crow flies: 442nd Regimental Combat Team Memorial (a few steps from this marker); John C. Fremont Monument (approx. ¾ mile away); Pyramid to Moses (approx. 0.9 miles away); Commemoration of Old Redwood Road from Redwood Canyon (approx. one mile away); The Monument Loop: A Legacy (approx. one mile away); The Creation of a Park (approx. one mile away); Joaquin Miller (approx. one mile away); Joaquin Miller’s Abbey (approx. one mile away). Touch for a list and map of all markers in Oakland.

Blossom Rock Navigation Trees Marker and Interpretive Panel - Wide View image. Click for full size.

Photographed by Andrew Ruppenstein, March 31, 2013

2. Blossom Rock Navigation Trees Marker and Interpretive Panel - Wide View

Credits. This page was last revised on February 10, 2026. It was originally submitted on April 16, 2013, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 1,731 times since then and 82 times this year. Last updated on December 20, 2016, by Michael Kindig of Elk Grove, California. Photos: 1, 2. submitted on April 16, 2013, by Andrew Ruppenstein of Lamorinda, California.