First reported European sighting of Yosemite Valley (1851)

In March 1851, members of the Mariposa Battalion, a California militia unit, reportedly entered Yosemite Valley. While earlier parties crossed the Sierra Nevada, the Battalion's expedition produced the first detailed descriptions of the valley. The group, formed to address conflicts with Native Americans, viewed the valley from Old Inspiration Point on March 27, 1851.

Episodes

Background and detail

Background. The Mariposa Battalion was a California Militia unit formed in 1851 following conflicts between miners and Native Americans. Governor John McDougal authorized the organization of two hundred men after Sheriff James Burney's force proved unequal to the task. The Battalion was mustered on February 12, 1851, to address issues in the Yosemite area.

Expedition and Discovery. Although the Joseph Walker Party crossed the Sierra Nevada in 1833, the first detailed descriptions of Yosemite came nearly twenty years later. The Mariposa Battalion, led by Major Jim Savage, entered the valley as part of a punitive expedition. Members had heard rumors of the area but were unprepared for the sights they encountered.

Naming and Legacy. Lafayette Bunnell, a member of the Battalion, led a vote to name the valley, leading to his credit for naming Yosemite. His book, Discovery of the Yosemite, contains his account of the exploration. The Battalion's entry involved burning villages and forcibly relocating Native Americans, actions part of the broader Mariposa War.

People involved

Sources

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