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Historical map overlays

USGS scanned historical topographic maps. Enable an overlay and adjust its opacity. Works in 2D and 3D.

Sun azimuth: 315°   Sun altitude: 45°   Z factor: 1   Lidar opacity: 1
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Boise Basin Lost Placer Gold

Lost Treasure ID • Boise County County
Description
Idaho City country legend that millions in troy ounces already washed from the Boise Basin gravels still remain in arroyos and watercourses northeast of Boise — one of the West's richest placer districts.
Historical Notes
Legends of America notes nearly three million troy ounces recovered from Boise Basin diggings with treasure writers claiming substantial placer remains in stream gravels near Idaho City. The 1862 Boise River rush made Idaho City a boomtown; modern recreational miners and lore hunters still chase "left behind" bucket gold in the basin. Coordinates center on Idaho City — representative of the broader basin treasure tradition rather than one buried outlaw cache.
Status / Verification legend — Legendary or approximate

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