It’s summer in Antarctica, which has scientists scurrying around the seventh continent carrying out various research experiments. That includes monitoring the massive crack that has spread across the Larsen C ice shelf, located on the Antarctic Peninsula.

On Tuesday, researchers with the British Antarctic Survey released new aerial footage showing the widening rift that threatens to tear the ice shelf asunder at any moment. The footage makes the immensity of the crack clear, as the yawning chasm stretches off into the horizon.

The crack now stretches more than 100 miles in length. And at 1,500 feet across, you could lay the Empire State Building across the rift with a few feet to spare.