Although I've seen more than a few in my lifetime and have even hiked across a couple, I've always found it hard to grasp the strength of glaciers. Are they really that powerful?
My question was answered not too long ago at work. During this last winter, the company hired to plow my work's parking lot moves snow piles to a culvert/gully just across the way. Over the course of the melt season, the piles of snow slowly move farther away from the parking lot towards the drainage pipe. Once all of the snow was melted, I noticed a cement parking block nearly half way (~100 ft.) to the pipe.
THE FLACIER (fake glacier) MOVED IT! They are powerful; believe it.