Triangle Marsh, Archaeological site in Marin County, California, United States
Triangle Marsh encompasses 31 acres of wetland at the base of Ring Mountain on the Tiburon Peninsula, connected to the San Francisco Bay ecosystem.
The archaeological site contains evidence of early Miwok settlements, who established communities near the marsh to utilize its abundant marine resources over centuries.
Researchers have documented pecked curvilinear nucleated petroglyphs on Ring Mountain, indicating the presence of Native American artistic and ceremonial practices.
The Marin branch of the National Audubon Society manages the site, implementing restoration projects for both upland and wetland habitats throughout the area.
The marsh provides critical habitat for endangered species such as the clapper rail and salt marsh harvest mouse within the San Francisco Bay region.
Location: California
GPS coordinates: 37.92229,-122.49666
Latest update: March 17, 2025 18:58
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