70
Geologic Map of North America, 2005 (7000 × 6798)
(d9-wret.s3.us-west-2.amazonaws.com)
Could be cool but who knows without a key to read it.
It's kinda cool despite that.
Is there a key?
Unfortunately, I cannot find a non-rasterized digital version even though the original clearly was a digitally typeset document.
For the map enthused!
Rules:
post relevant content: interesting, informative, and/or pretty maps
be nice