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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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Los Almagres Mine (Riley Mountains)

Lost Treasure TX • Llano County County
Description
Historic Spanish silver prospect at the cerro de almagre (Riley Mountains) near Honey Creek, Llano County — the real Los Almagres mine that inspired the "Lost San Saba" legend. Shafts opened in 1756; mine never commercially worked.
Historical Notes
In February 1756 Bernardo de Miranda y Flores reached the cerro de almagre a quarter league from Honey Creek and opened the San José del Alcazar shaft, reporting abundant ore veins. Governor Barrios sent samples to Mexico City; assays were inconclusive and the mine was never officially opened. Apache and Comanche hostilities halted work. In 1842 Anglo-Texans found the old diggings but did not connect them to the San Sabá legend. Herbert Bolton relocated Miranda's journal route to the Boyd shaft on Honey Creek in 1904. USGS later described the site as unproductive. The "lost" mine treasure hunters seek near Menard is a geographic confusion of this Llano County site. Historical interest remains high; fortunes and lives have been spent chasing the chimera in the wrong county.
Status / Verification legend — Legendary or approximate

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