Researchers descending into giant craters on the seafloor found structures that had no right to be there, modern, active, and completely absent from every map ever made of this region.
On the floor of the Canadian Beaufort Sea, something is growing in the dark. Not slowly, not quietly, but in massive ridges of ice that blister upward through the sediment, then collapse into sinkholes the size of city blocks. The seafloor here looks... [5685 chars]