Sunday, March 4, 2012
The Shadow of a 250-Year-Old Fort
This is why we dug where we did in 2011 (see Fort de Chartres posts February 29 and March 2). This is an aerial photo taken in 1928, which shows an unusually vivid soil stain in a cultivated field. This contrast-enhanced version clearly depicts a square enclosure with what appear to be four bastions, one on each corner. The northwest bastion is blurred by erosion. Archaeological remains of structures rarely leave behind such vivid stains – caused by changes in the organic composition of the topsoils, created by past activity.