#0012

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What is this and where is it located?

Answer:
This is one of the paddlewheel motors on the Mark Twain Riverboat.

The responses I received were:

Richard Blythe
The engine of the Mark Twain.
Don't you just love riding with the CM at top.
-- Believe it or not, that's one thing I haven't done yet. Maybe I should see if I can do that today.

Tim & Malinda
Part of the steam engine of the Mark Twain Riverboat.