Sierra magazine

History, Hidden Under the Waves

Broken, brown tree stumps and roots lie askew along an ancient peat bog on Block Island, churned up by Hurricane Sandy. Such bogs are not unusual in New England, but this one is different: it’s 6,000 years old and under 12 feet of water—a relic of a time when the ocean floor was filling in as mile-high glaciers melted and seas rose. [Archeologists and Native American tribes work together to identify culturally important sites underwater.]