@wonderofscience it very cool but it also hurts my brain when I try to comprehend it. It seems as if there's enough room in the path leading up to the wheel for a single boat going in a single direction, and the picture shows a boat departing on both top in bottom, going in opposite directions.

So... how do they accommodate boats exiting the top wheel _and_ entering the top wheel? It doesn't look like there's enough room.

@ubersoft @wonderofscience Boats have to book a time slot 24 hours in advance, and stay in contact as they're approaching, so there should never be more boats waiting than the lift can accommodate (two large ones, or up to 8 small ones). They do have to pass through the tunnel at the top one at a time, though.

If you look at the satellite view, there are wider stretches of canal nearby where additional boats can stop and wait if required.