Atreus attempted to rotate the crank. It refused to budge. Abandoning his effort, he retreated behind Kratos, who threw his axe into the crank, causing it to turn clockwise. As the crank spun, the floor rose, elevating them toward the spiked ceiling.
“Oh,” was all Atreus said, realizing how the machinery worked.

God Of War - Midgard, Ch 9