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Canals are artificial waterways made to move water and watercraft often extending or connecting natural water resources like rivers, lakes, seas, and oceans and can be found in many different parts of the world.
Before steam power and combustion engines, canal boats could be pulled by horses walking on a towpath like the one seen on the right here.
One problem with towpaths was that when horses passed under a bridge the rope rubbed against the bridge arch. This resulted in deep grooves being worn into the stonework of the bridge, and in many cases, the structure was protected by cast iron plates, attached to the faces of the arch. These too soon developed deep grooves, but could be more easily replaced than the stonework of the bridge
Play this puzzle with the Pics n Mix app!
Pics n Mix is quick and easy to learn, and the short video below explains everything you need to know.
Just choose a puzzle and click the Play button. Drag and drop the pieces to where you think they should be. If you have chosen "plus rotation" it means some of the pieces are flipped top to bottom or right to left. If you tap a piece once, it will flip from top to bottom. and if you double tap it, it will flip from left to right.