Shipwreck hunters have discovered the intact remains of a schooner that sank in Lake Michigan in 1881 and is so well-preserved it still contains the crew’s possessions in its final resting spot miles from Wisconsin’s coastline.

Wisconsin maritime historians Brendon Baillod and Robert Jaeck found the 156-year-old Trinidad in July off Algoma at a depth of about 270 feet (82 meters). They used side-scan sonar to hone in on its location based on survivor accounts in historical records.

“The wreck is among the best-preserved shipwrecks in Wisconsin waters with her deck-house still intact, containing the crew’s possessions and her anchors and deck gear still present,” states a Thursday news release announcing the Trinidad’s discovery.