https://uk.news.yahoo.com/birds-eye-view-incredible-aerial-000000210/photo-p-precise-rectangle-york-central-photo-000000238.html

....looking a bit like a 'motherboard'...go figure:

oh and the 'black' in the following pic...makes the 'border screen black' look grey...go figure:

and the following two images appear to sum up...the 'clump' that I am digging up, this evening...go figure: