By Tom Ashworth — CALAVERAS COUNTY, CALIFORNIA County

Sun shading (lidar)

Adjust simulated sun direction on the lidar hillshade. Azimuth = compass bearing of the light (0° north, 90° east). Altitude = height above the horizon (low = long shadows).

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
center: —   mouse: —   zoom: —

By Tom Ashworth — CALAVERAS COUNTY, CALIFORNIA County

Gold Mining Site CA • CALAVERAS COUNTY, CALIFORNIA County County
Description
LOCATION COUNTY: Calaveras County STATE: California After placer gold was discovered in 1849, rich lode veins were opened in 1850 above the placer workings. Placer gold production is estimated at 2,415,000 ounces and lode gold at 2,045,700 ounces
Historical Notes
Source: Tom Ashworth's Prospectors Cache (tomashworth.com / Tom Ashworth). Author: Tom Ashworth. Original page: calaveras_ca.shtml. Area: by Tom Ashworth. Map coordinates refined from text (landmark: "Tom, CALAVERAS COUNTY, CALIFORNIA County, California, USA"). Still approximate — verify on the ground. LOCATION COUNTY: Calaveras County STATE: California After placer gold was discovered in 1849, rich lode veins were opened in 1850 above the placer workings. Placer gold production is estimated at 2,415,000 ounces and lode gold at 2,045,700 ounces
Status / Verification historical_site — Legendary or approximate

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