FYI, just recorded geometric earthwork number 1,000 this morning.
I'll be updating my web content in short order, last data update, XLS ans KML, was not many day ago. HTML update was at the end of the year.
http://jqjacobs.net/archaeology/geoglyph.html
More news here, including links to lots of aerial photos:
https://googleearthcommunity.proboards.com/thread/2106/amazon-geoglyphs
Something is not right. This message is just to keep things from messing up down the road