Cannon shot and military engineering broke the earth’s crust, churning up amber, sand, shells, and petrified animal remains. These fossils allowed early modern people to rewrite the history of the earth. Against many contemporary views, Major argued that plant, animal, and other bodies hardened into rock slowly over time through the contingent motions of salt in conditions of changing humidity. He conjectured about how stones that were widely collected as wonders of nature could be explained through geological processes in their sites of excavation. He collected locally on the beaches of Kiel and aimed to travel to a famous cave in the Harz mountains where so-called dragon’s bones, unicorn horns, and human-like rocky formations could be found. However, Major never completed his cave study nor a planned major work on lithology. Relatedly, he sought to establish a science of shells but never finished it to his satisfaction. As Major gained new knowledge, he continually rearranged his own collections into new formations that gave rise to new perspectives. His increasing recognition that some underground stones were ancient artifacts shifted his interest from petrifaction to archaeology.