Money Bin, again

[Shelley Hanson/KlezmerAllThatJazz]

Don Rosa, 

though you're dealing with the Money Bin itself, at some point you might
want to do a map of the grounds. In the story involving Death Valley Sandy
and the Duckburg Hall of Science, we learned that there was an old abandoned
tunnel under the Bin. Also, we know that Scrooge had a trapdoor in the
sidewalk outside the Bin (King of the Golden River) and of course the old
Ft. Duckburg escape tunnel to the river.....