Do you think this muskrat knew: On June 18, 1805, Clark described Giant Springs as “the largest fountain or Spring I ever Saw, and doubt if it is not the largest in America Known, this water boils up from under th rocks near the edge of the river and falls imediately into the river 8 feet and keeps its Colour for ½ a mile which is emencely Clear and of a bluish Cast.” On June 29, Lewis and Drouillard hiked six miles from their upper portage camp to visit the spring after hearing Clark’s description. He found it “much as Capt. C; had discribed & think it may well be retained on the list of prodegies of this neighbourhood towards which, nature seems to have dealt with a liberal hand.”