Dumbarton Quarry Amphitheater GC9H2AT
by jellis
Alameda county, CA, United States
5.50 Points
89 finds in 4 years, 10 months
Next find points: 5.44
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First available: October 23, 2021
Last Update: September 7, 2026 5:59 PM
Last Full Sync: June 22, 2026 1:34 PM
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Statistics last updated Monday, 14 September 2026 04:28:43 Eastern Daylight Time
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