Background

Site of Blossom Rock Navigation Trees: A Maritime Legacy

Discover Oakland's maritime history at the Site of Blossom Rock Navigation Trees, where towering redwoods once guided ships through the treacherous San Francisco Bay.

4.6

The Site of Blossom Rock Navigation Trees, nestled within Oakland's Roberts Regional Recreation Area, marks a poignant chapter in San Francisco Bay's maritime history. Once towering redwood trees, these natural giants served as crucial navigational aids for mariners navigating the treacherous Blossom Rock, a submerged hazard in the bay. In the 19th century, sailors aligned these conspicuous trees with Yerba Buena Island to safely navigate the channel. Though the original trees were logged in the mid-1800s, sprouts from their stumps remain, bearing witness to a bygone era of seafaring and the ingenuity of early navigation techniques. Today, the site offers a tranquil escape amidst redwood groves, inviting visitors to reflect on the region's rich nautical past and the enduring power of nature's landmarks. The area provides a peaceful atmosphere where history blends seamlessly with nature, ideal for leisurely strolls and photography enthusiasts.

A brief summary to Site of Blossom Rock Navigation Trees

  • 085 000100201, Oakland, CA, 94619, US

Local tips

  • Visit the site during the week to avoid weekend crowds and enjoy a more peaceful experience.
  • Combine your visit with a hike in Redwood Regional Park for a full day of outdoor adventure.
  • Bring a picnic to enjoy in the Madrone Picnic Area, surrounded by the beauty of the redwood forest.
widget icon

Getting There

  • Driving

    From downtown Oakland, take Highway 13 (the Warren Freeway) north towards Redwood Road. Take the Redwood Road exit and follow Redwood Road up the hill. Turn left onto Skyline Boulevard. Roberts Regional Recreation Area will be on your right in approximately one mile. Follow signs for the Madrone Picnic Area. Parking at Roberts Regional Recreation Area costs $5 per vehicle.

  • Public Transport

    From downtown Oakland, take BART to the MacArthur station. Transfer to AC Transit bus #46 towards Skyline Boulevard. The bus stops at the intersection of Skyline Blvd. and Joaquin Miller Road. From there, it is approximately a 1-mile walk uphill along Skyline Boulevard to the entrance of Roberts Regional Recreation Area. Check AC Transit schedules for current fares and times. From behind the former headquarters building, it is 1.08 miles along the Dunn and Graham trails to Roberts.

Unlock the Best of Site of Blossom Rock Navigation Trees

Buy tickets

    No tickets available

Book tours with entry

    No tours available

Book tours without entry

    No tours available

Discover more about Site of Blossom Rock Navigation Trees

The Site of Blossom Rock Navigation Trees, a California Historical Landmark located within the serene Madrone Picnic Area of Roberts Regional Recreation Area in Oakland, whispers tales of maritime navigation and the colossal redwoods that once guided ships through the perilous waters of San Francisco Bay. In the early to mid-19th century, before modern navigational tools, sailors relied on prominent landmarks to avoid hazards. One such hazard was Blossom Rock, a submerged rock located west of Yerba Buena Island, posing a significant threat to ships entering and leaving the bay. To safely navigate this treacherous area, mariners used two exceptionally tall redwood trees, strategically positioned on the Oakland hills, as natural navigation aids. Captain Frederick William Beechey of the Royal Navy, who charted the bay in 1826 aboard the HMS Blossom (after which the rock was named), documented this practice, noting that aligning the northern tip of Yerba Buena Island with these 'conspicuous' trees ensured a safe passage. The trees, part of a redwood forest called 'Palos Colorados' by the Spanish, were visible from as far as 16 miles away, attesting to their immense size. These 'Navigation Trees' became indispensable landmarks, guiding countless vessels through the Golden Gate and into the bustling port of San Francisco. The precise location of the trees was so critical that the American navy tried to place buoys around the rock, but rough seas made it difficult to maintain them. Tragically, the widespread logging that swept through the Bay Area in the mid-19th century claimed these natural sentinels. Between 1851 and 1855, the Navigation Trees were felled, depriving sailors of their vital navigational aid. This loss exacerbated the dangers posed by Blossom Rock, prompting the U.S. Army Corps of Engineers to undertake the formidable task of removing the hazard. In 1870, after years of planning and preparation, the Corps used over 4,300 pounds of explosives to reduce Blossom Rock to a safe depth, eliminating the threat it posed to maritime traffic. Today, the Site of Blossom Rock Navigation Trees serves as a poignant reminder of this era. Although the original trees are gone, second-growth redwoods now stand as sprouts from the original stumps, marking the location where their towering ancestors once stood. A California Historical Landmark plaque, dedicated on August 23, 1986, commemorates the site's significance and recounts the story of the Navigation Trees. Visiting the site offers a unique opportunity to connect with the region's maritime past and appreciate the ingenuity of early navigation techniques. The Madrone Picnic Area, where the plaque is located, provides a tranquil setting for reflection amidst the towering redwoods. The site is easily accessible within Roberts Regional Recreation Area, offering a variety of recreational activities, including hiking, picnicking, and enjoying the natural beauty of the redwood forest. Roberts Regional Recreation Area itself is a treasure trove of natural beauty and recreational opportunities. The park's redwood groves offer a cool respite from the city, with trails winding through the towering trees. The park also features picnic areas, a swimming pool (seasonal), an archery range, and a playground, making it an ideal destination for families and outdoor enthusiasts. For those interested in exploring the area further, Roberts Regional Recreation Area connects to Redwood Regional Park, offering even more extensive hiking trails and redwood forests. Nearby attractions include the Chabot Space & Science Center, Joaquin Miller Park, and various regional open space preserves, providing ample opportunities for outdoor adventure and exploration. The Site of Blossom Rock Navigation Trees is more than just a historical marker; it is a testament to the resourcefulness of early mariners, the grandeur of California's redwood forests, and the ever-evolving relationship between humans and the natural world. A visit to this site offers a chance to step back in time, appreciate the challenges faced by those who navigated the bay's treacherous waters, and marvel at the enduring legacy of the Navigation Trees. As you wander through the redwood groves, imagine the towering trees that once stood here, guiding ships safely through the Golden Gate. Consider the ingenuity of the sailors who relied on these natural landmarks, and the impact of logging on the region's landscape. The Site of Blossom Rock Navigation Trees invites you to reflect on the past, appreciate the present, and consider the future of our natural and cultural heritage. Whether you are a history buff, a nature lover, or simply seeking a peaceful escape from the city, the Site of Blossom Rock Navigation Trees offers a rich and rewarding experience. Come and discover the stories whispered by the redwoods, and connect with the maritime legacy of San Francisco Bay.

Popular Experiences near Site of Blossom Rock Navigation Trees

Popular Hotels near Site of Blossom Rock Navigation Trees

Select Currency