The Marin County community is reeling from a devastating tragedy that claimed the lives of four teenagers from Archie Williams High School. What began as a report of three fatalities on San Geronimo Valley Road later became a quadruple fatal crash, leaving families shattered and a community in mourning.
The incident has sparked an outpouring of grief throughout Marin. Vigils and memorials have been established to honor the young lives lost too soon.
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Tragic Accident Details Emerge in West Marin
On Friday evening, April 18, 2025, around 7:30 PM, a Volkswagen Tiguan crashed into a tree on San Geronimo Valley Road near Sir Francis Drake Boulevard. The crash site, located in the wooded area between Fairfax and Point Reyes Station, has become a focal point for community grief and remembrance.
Young Lives Lost in San Geronimo Valley
The tragedy claimed the lives of four teenagers: 14-year-old Olive Koren, 16-year-old Josalynn Osborn, 15-year-old Sienna Katz, and 15-year-old Ada Kepley. All were students at Archie Williams High School in San Anselmo.
Initial reports indicated three fatalities and three serious injuries, but the death toll later rose to four as authorities completed their investigation. The incident has sent shockwaves through the tight-knit communities of Fairfax, San Anselmo, and throughout Ross Valley.
Community Response Across Marin
The response from residents throughout Marin County has been immediate and heartfelt. From Mill Valley to Novato, from Tiburon to Inverness, community members have rallied to support the families affected by this loss.
A growing memorial has appeared at the crash site. Visitors from Larkspur, Corte Madera, and beyond have left flowers, notes, and Easter baskets in remembrance of the young victims.
Vigils and Remembrances in Ross Valley
A moving vigil was held in the days following the accident, bringing together hundreds of mourners from San Rafael, Greenbrae, and neighboring communities. Students, teachers, and families gathered to honor the four high school girls who lost their lives, sharing memories and supporting each other through collective grief.
One parent of a teen involved in the crash has spoken publicly about the tragedy, though the specifics of their statement weren’t detailed. It was noted that someone named Elsa was among those involved in the accident, though her condition remains unclear from available reports.
School Community in Mourning
Archie Williams High School in San Anselmo has become the center of grief support for students and faculty.
Crisis counselors from throughout the Ross Valley School District and Tamalpais Union High School District have been made available to help the school community process this devastating loss.
“These were bright, vibrant young women with their whole lives ahead of them,” shared one community member from Woodacre, near the crash site.
“The entire San Geronimo Valley is grieving alongside their families.”
From Bolinas to Belvedere, from Sausalito to Stinson Beach, residents across Marin continue to find ways to honor the memory of these four teenagers whose lives were cut tragically short.
Here is the source article for this story: Three dead, three injured in Marin County crash
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