Native Americans in the Pinnacles region comprised the Chalon and Mutsun groups of the Ohlone people, who left stone artifacts in the park.
These native people declined with the arrival of the Spanish in the 18th century, who brought novel diseases and changes to the natives' way of life.
The establishment of a Spanish mission at Soledad hastened the area's native depopulation through disease and dispersion.
Archaeological surveys have found 13 sites inhabited by Native Americans, 12 of which antedate the establishment of the missions.
One site is believed to be about 2000 years old.
The last Chalon had died or departed from the area by 1810.
From 1810 to 1865, when the first Anglo-American settlers arrived, the Pinnacles region was a wilderness without human use or habitation.

By the 1880s the Pinnacles, then known as the Palisades, were visited by picnickers from the surrounding communities who would explore the caves and camp.
The first account of the Pinnacles region appeared in print in 1881, describing the Balconies area.
Between 1889 and 1891, newspaper articles shifted from describing excursions to the "Palisades" to calling them the "Pinnacles".
Interest in the area rose to the point that the Hollister Free Lance sent a reporter to the Pinnacles, followed two months later by a party of local officials.
Investors came from San Francisco to consider placing a resort hotel there, but the speculation came to nothing.
In 1894, a post office was established in Bear Valley.
Schuyler Hain was the postmaster.
Since at least one other Bear Valley was in California, the post office was named "Cook" after Mrs. Hain's maiden name.
In 1924, the post office was renamed "Pinnacles".

Schuyler Hain was a homesteader who arrived in the Pinnacles area in 1891 from Michigan, following his parents and eight siblings to Bear Valley.
His cousin, A.W. White, was a student at Stanford University, and White brought G.K. Gilbert, one of his professors, to see the Pinnacles in 1893.
Dr. Gilbert was impressed by the scenery, and his comments inspired Hain to publicize the region.
Hain led tours to Bear Valley and through the caves, advocating the preservation of the Pinnacles.
Hain's efforts resulted in a 1904 visit by Stanford president David Starr Jordan, who contacted Fresno Congressman James C. Needham.
Jordan and Needham, in turn, influenced Gifford Pinchot to advocate the establishment of the Pinnacles Forest Reserve to President Theodore Roosevelt, who proclaimed the establishment on July 8, 1906.
Pinchot, who was primarily interested in the management of forests for productive use rather than for preservation, advocated the use of the recently passed Antiquities Act to designate the scenic core of the area as Pinnacles National Monument, which was done by Roosevelt on January 16, 1908.
This designation nominally passed control of the Pinnacles from the Department of Agriculture to the Department of the Interior, but the U.S. Forest Service retained effective control of the area until circa 1911.

In his efforts to promote the Pinnacles, Hain became convinced that the Pinnacles were an "extraordinary mountain" described by Captain George Vancouver and pictured by John Sykes in his book Voyage of Discovery, which documented the Vancouver Expedition.
Hain began to refer to the mountain as "Vancouver's Pinnacles", a term that was picked up by Sunset in a 1903 article.
References to "Vancouver's Pinnacles" persisted until 1955, when analysis of the Sykes picture indicated that the mountain described by Vancouver was actually located near Fort Ord, within easy reach of the day trip described by Vancouver.
Native Americans in the Pinnacles region comprised the Chalon and Mutsun groups of the Ohlone people, who left stone artifacts in the park. These native people declined with the arrival of the Spanish in the 18th century, who brought novel diseases and changes to the natives' way of life. The establishment of a Spanish mission at Soledad hastened the area's native depopulation through disease and dispersion. Archaeological surveys have found 13 sites inhabited by Native Americans, 12 of which antedate the establishment of the missions. One site is believed to be about 2000 years old. The last Chalon had died or departed from the area by 1810. From 1810 to 1865, when the first Anglo-American settlers arrived, the Pinnacles region was a wilderness without human use or habitation.
By the 1880s the Pinnacles, then known as the Palisades, were visited by picnickers from the surrounding communities who would explore the caves and camp. The first account of the Pinnacles region appeared in print in 1881, describing the Balconies area. Between 1889 and 1891, newspaper articles shifted from describing excursions to the "Palisades" to calling them the "Pinnacles". Interest in the area rose to the point that the Hollister Free Lance sent a reporter to the Pinnacles, followed two months later by a party of local officials. Investors came from San Francisco to consider placing a resort hotel there, but the speculation came to nothing. In 1894, a post office was established in Bear Valley. Schuyler Hain was the postmaster. Since at least one other Bear Valley was in California, the post office was named "Cook" after Mrs. Hain's maiden name. In 1924, the post office was renamed "Pinnacles".
Schuyler Hain was a homesteader who arrived in the Pinnacles area in 1891 from Michigan, following his parents and eight siblings to Bear Valley. His cousin, A.W. White, was a student at Stanford University, and White brought G.K. Gilbert, one of his professors, to see the Pinnacles in 1893. Dr. Gilbert was impressed by the scenery, and his comments inspired Hain to publicize the region. Hain led tours to Bear Valley and through the caves, advocating the preservation of the Pinnacles. Hain's efforts resulted in a 1904 visit by Stanford president David Starr Jordan, who contacted Fresno Congressman James C. Needham. Jordan and Needham, in turn, influenced Gifford Pinchot to advocate the establishment of the Pinnacles Forest Reserve to President Theodore Roosevelt, who proclaimed the establishment on July 8, 1906. Pinchot, who was primarily interested in the management of forests for productive use rather than for preservation, advocated the use of the recently passed Antiquities Act to designate the scenic core of the area as Pinnacles National Monument, which was done by Roosevelt on January 16, 1908. This designation nominally passed control of the Pinnacles from the Department of Agriculture to the Department of the Interior, but the U.S. Forest Service retained effective control of the area until circa 1911.
In his efforts to promote the Pinnacles, Hain became convinced that the Pinnacles were an "extraordinary mountain" described by Captain George Vancouver and pictured by John Sykes in his book Voyage of Discovery, which documented the Vancouver Expedition. Hain began to refer to the mountain as "Vancouver's Pinnacles", a term that was picked up by Sunset in a 1903 article. References to "Vancouver's Pinnacles" persisted until 1955, when analysis of the Sykes picture indicated that the mountain described by Vancouver was actually located near Fort Ord, within easy reach of the day trip described by Vancouver.
Pinnacles National Park