United Kingdom · fortification · 51°05'36.0"N 1°48'17.0"W
Old Sarum is a fortification in United Kingdom, site of the earliest settlement of Salisbury in England. Pyramason catalogues it as PYR-051901 at 51.09333, -1.80472 (51°05'36.0"N 1°48'17.0"W).
There are 14 other catalogued sites within 5 km of it, 837 within 25 km and 2,031 within 50 km. That density is itself the finding: this is not an isolated monument but part of a worked landscape.