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The world's largest compass rose is painted into the lakebed of the Rogers Dry Lake in California.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...mpass_rose.jpg
Previously:
https://www.homemadetools.net/forum/...2866#post77013
https://www.homemadetools.net/forum/...429#post162067
https://www.homemadetools.net/forum/...663#post155636
https://www.homemadetools.net/forum/...483#post122679
From Wikipedia: https://en.wikipedia.org/wiki/Edwards_Air_Force_Base
Also painted on the dry lake beds near Dryden is the world's largest compass rose: 2,000-foot (610 m) radius, 4,000 feet (0.76 mi; 1.22 km) in diameter. The Edwards AFB compass rose's magnetic declination to true north is measured by Google Earth's distance/direction measurement tool as inclined to magnetic north with a 15.3 degrees east variance of true north, as opposed to the current variance of 12.4 degrees east (2014.) This is consistent with a calculated magnetic variance at this location in the early 1960s. The larger lake bed, Rogers, encompasses 44 square miles (110 sq km) of desert. Because of Rogers' history in the space program, it was declared a National Historic Landmark.
I do spend a lot of time looking at Google Earth.
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