MM_Dandy wrote:According to Google one Flemish ell is equal to 27 inches. But is that per hour, day...fortnight?
MM_Dandy wrote:Ok, then, that's about 27 inches per year, which is not the correct answer.
In 1869, an attempt to tunnel under the falls ended with a catastrophic collapse and nearly destroyed the falls. The situation was remedied with a major engineering effort which drastically changed the face of the falls.
MM_Dandy wrote:Ah, too bad. I really thought the last few posts would give it away. The 'apron' basically made the falls into a spillway. They are in the same place now as they were then. In fact, even had there been no disaster, without the apron, the falls probably would be just a rapids today, as they would have receded to the point were the limestone shelf ends.
Thousands of years ago, the falls were much further downriver, past the confluence of today's Minnesota River. At the end of the last ice age, a large inland sea covered parts of Manitoba, Saskatchewan, North Dakota, Minnesota, and South Dakota. At some point, it breached what is called the Big Stone Moraine on the Minnesota/South Dakota border, and gave rise to what is called River Warren. The Warren cut out the valley that the much smaller Minnesota Rivers runs through today. Near present-day Minneapolis, the Warren was joined by the Mississippi, which itself is thought to have been somewhat larger than modern times due to glacial runoff. From there, the Warren proceeded northeasterly until reaching what is now downtown St.Paul and spilling over the massive Warren River Falls.
KLA2 wrote:I was just about to say that. Yeah. Me and my wife ... Morgan Fairchild, we talk about that all the time. After sex. Yeah. :P
MM_Dandy wrote:Now there's a bit of trivia I didn't know. It also conjures imagery of Morgan Fairchild and a robot having sex. Very disturbing.
Heid the Ba' wrote:Are these the C16th city walls that Ivan the Terrible put up? I don't know the name of them tough.
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