Ocean currents created hundreds of acres of unmapped new land on Fire Island.

Evidence

Then he remembered what the baymen had told him about the set of the ocean. Since 1892, the waves had been piling sand on Fire Island’s western end. He began to walk along the new land—and he walked for four miles. The Coast Guard station wasn’t a little enclave any more; its area, he calculated, was at least six hundred acres. And the station was deserted. No one even knew the added six hundred acres were there. — Robert A. Caro, The Power Broker, 754

Categorization

• XREF: Connects to the theme of invisible or assumed infrastructure lying beneath/around us that only observant individuals notice, similar to quiet places vanishing or unnoticed acoustic landscapes.