These are the movable stacks in the Swem library at William and Mary. Here's another shot .
In this shot you can see that there is space between the stacks half way down. The stacks are packed close together, but if you turn the crank you can move a stack farther apart from its neighbor, so you can access the books.
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Looks like a scene from the Matrix movies! I remember movable stacks like these from when I lived in vancouver, they were very ominous. I gave you a 7 in voting. Good shot!
I am so relieved to have this explained. I found it quite chilling - I was thinking locker room for the armygeddon/geddonarmy, detention cubicles; and all the time it was just the heavy carapactory of recorded utterance.