Barker Dam and Wall Street Mill
Double feature in Joshua Tree National Park. Barker Dam is just over a mile, a short loop that takes in rock art, the dam, and a nice mix of boulders and desert. Wall Street Mill is two miles out and back and the mill extracted gold to send to the US Mint in San Francisco.
Hike starts at: 34.025005, -116.142098. View in Google Earth.
(Related: Kirby Cove; Lake Merced; Golden Gate Park - Stow Lake, Strawberry Hill and Museum Concourse)
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(Hike Map)