On one evening in 2016, two Danish amateur archaeologists were out on a walk. Lis Therkildsen and Ernst Christiansen also had a metal detector with them as they went, and as they crossed a field, that detector started to give a signal. So, Therkildsen and Christiansen dug about 12 inches into the ground until part of a metal object appeared. And when they later found out what they had discovered, they may have been astonished.
Metal detecting has become an increasingly popular hobby over the years, with its exponents ranging from serious amateurs like Therkildsen and Christiansen through to hobbyists hoping to find a buried treasure trove. Most of the time, though, detectorists are more likely to turn up ring pulls or other trash than any gold.