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Old Maps of Ponderosa Basin, California for Metal Detecting

Plan your next treasure hunt with 10 historic maps of Ponderosa Basin. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Ponderosa Basin.

Ponderosa Basin, CA maps

(10)
  1. 1912 Map of Mariposa
    1912 Map of Mariposa
    1912 Mariposa
    1912 Print · USGS
    The California Sierra foothills in the early twentieth century are mapped here as a hive of mining and timber activity. Researchers can trace the legacy of remote settlements and family lands including Grub Gulch, the Indian Settlement, and Knowles.
    6 unique versions available
  4. 1947 Map of Mariposa, 1948 Print
    1947 Map of Mariposa, 1948 Print
    1947 Mariposa
    1948 Print · USGS
    The High Sierra and Owens Valley transition is captured here in the late 1940s, just as the region’s hydroelectric and tourism infrastructure was maturing. Genealogists and historians can trace old ranger stations, the Casa Diablo Mine, and rail stops along the Southern Pacific like Benton Station and Zurich.
    2 unique versions available
  7. 1948 Map of Mariposa, 1951 Print
    1948 Map of Mariposa, 1951 Print
    1948 Mariposa
    1951 Print · USGS
    The High Sierra and Mariposa foothills are shown here in the late 1940s as the post-war tourism and water infrastructure expanded. Genealogists and historians can locate vanished waypoints like Mormon Bar, the Glacier Point Hotel, and the granite quarries of Knowles.
  10. 1953 Map of Bass Lake, 1955 Print
    1953 Map of Bass Lake, 1955 Print
    1953 Bass Lake
    1955 Print · USGS
    The foothills of the Sierra Nevada come alive in the early fifties, detailing a landscape of historic mines and emerging mountain resorts. Genealogists and historians can trace the footprint of early ranching and industry at Bissetts Ranch, Texas Flat Mine, and the Ahwahnee Sanatorium.
    4 unique versions available
  13. 1957 Map of Mariposa, 1966 Print
    1957 Map of Mariposa, 1966 Print
    1957 Mariposa
    1966 Print · USGS
    The High Sierra and Owens Valley appear in the mid-fifties, showing the intersection of conservation, hydroelectric power, and mountain industry. Genealogists and researchers can trace local landmarks like Yosemite Cemetery, the remote Kinsley Station, and the Pine Creek Mine.
    4 unique versions available
  16. 1963 Map of Mariposa
    1963 Map of Mariposa
    1963 Mariposa
    1963 Print · USGS
    The High Sierra and Owens Valley meet in the early sixties, showing a landscape defined by gold-rush history and massive post-war water projects. Genealogists and researchers can trace old mining routes near Mariposa, locate the Glacier Point Hotel, and find small settlements like Coarse Gold or Knowles Junction.
  19. 1980 Map of Shaver Lake
    1980 Map of Shaver Lake
    1980 Shaver Lake
    1980 Print · USGS
    The Sierra Nevada foothills and high country come into focus during the early eighties, showing the region's complex water and timber infrastructure. Researchers can trace the heritage of local industry at Knowles Quarry, Buchanan Mine, and the hydroelectric works around Big Creek.
    3 unique versions available
  22. 1990 Map of Fish Camp
    1990 Map of Fish Camp
    1990 Fish Camp
    1990 Print · USGS
    The Sierra Nevada high country at the start of the nineties reveals a landscape of forest service history and timber heritage. Researchers can trace the boundary of Yosemite National Park and locate historic sites like Harris Ranch Mill and Wassama Roundhouse State Historical Park.
  25. 2004 Map of Fish Camp, 2007 Print
    2004 Map of Fish Camp, 2007 Print
    2004 Fish Camp
    2007 Print · USGS
    The borderlands of Mariposa and Madera Counties are captured here during the early 2000s, showcasing the intersection of timber history and park land. Researchers can trace the legacy of mountain industry and indigenous sites at Harris Ranch Mill, Sugar Pine, and the Wassama Roundhouse State Historical Park.
  28. 2021 Map of Fish Camp, 2021 Print
    2021 Map of Fish Camp, 2021 Print
    2021 Fish Camp
    2021 Print · USGS
    The Sierra Nevada mountains at the Yosemite boundary are captured here in the early twenty-first century. Genealogists and historians can trace family locations near Harris Family Cem or follow old routes like Grant Grade-Tollroad and the Ten Mile RR Spur.
End of results
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