Below the big empty space is the Wind Rivers, with parts of Wyoming range on left, Gros Ventre above.
They say that 97% of America is within 3 miles of a road.
Some qualifications about the map. All roads are depicted the same width, eight lane highway with breakdown lanes and double track logging roads. A one pixel wide road is six times the width of a logging road.
In case you needed to waste another half hour of your day click on the link below then placing your cursor over an area you know, click again.
http://foid.me/...
http://missoulian.com/...