Located outside of Greenwood on Sliger Mine Road. It is .227 of a acre. About 70 plots are shown in a Ground Penetrating Radar map.

Spanish Dry Diggings was established in 1850 as a mining community that lasted until the 1940's.
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From the book: Historical souvenir of El Dorado County, California/page 185

Spanish Dry Diggings is situated in the northern part of El Dorado county, on the summit of the hill above the Middle Fork of the American river, five miles from Georgetown, four miles from Greenwood.

In 1848, Don Andreas Pico, brother of ex-Governor Pio Pico, organized a company of Mexican miners, Chiefly Sonorians, for the purpose of a prospecting tour through the Sierras, to test the extent of Marshall's discovery of gold. The company thus organized under the leadership of Don Andreas, proceeded north to the Yuba river, and from thence south to the Stanislaus, traversing and superficially prospecting all the since celebrated mineral belt known to the world as California's richest placer diggings. In the course of his trip Don Andreas passed through what is know as Spanish Dry Diggings. Resting a short time here, the most experienced of his men, detailed for prospecting, were at work in the ravines, obtained rich prospects in coarse gold of a quartz nature.

In 1849 Don Andreas having become generally known among the Mexicans, others of that nationality became in many instances the pioneers in mining settlements. Thus it was here, the first settlers were of Spanish-American origin. Soon after came American, Germans and others. The name of the first trading-post was Dutchtown, after which the name of the village was changed to correspond with that by which the mines in the vicinity were know, and thus came the name of Spanish Dry Diggings.