Wow! I just opened the tube containing my Geologic Map of North America, which I ordered from the Geological Society of America. What an incredible effort - the level of detail is astounding. It comes in three rolled sheets, two showing the geology and a third with the rock unit descriptions.
I can see myself studying this map for hours, provided I first find a place to hang it. The two map sheets are each a huge 3 1/2 x 6 feet! The third is slightly smaller. Where am I gonna put them?