Seeing those big blocks of ice reminds of the "ice block riding" that they do in Utah for summer fun. You get a bunch of ice blocks and drag them to the top of the hill. It's got to be a steep hill well covered in grass. Then you straddle the ice block and some one shoves you off down the hill. It's a wild ride. The smaller folks will pile 2 or 3 bodies on the block and take off. Some folks take a rope and attempt to make a handle on the front edge by developing a grove on the front of the block with friction. It works but those people are generally seen as wimps. The biggest trick is getting the ice back up the hill.
This form of recreation was first done in the late 1800s and is still around today. On any weekend you can see the shrinking ice blocks at the bottom of the hill after people have had enough or were taken to the hospital.
We tried it once when we were visiting there and that was enough for me. Take care, Lisa