Mysterious find beneath field leads man to massive treasure hidden for centuries

The coins, found near Wesseling, south of Cologne, were uncovered by Oliver Riedl, according to The Associated Press (AP). Though the hoard was discovered last year, officials only recently announced the find, calling it the largest coin hoard from the reign of Roman Emperor Hadrian ever found in Germany.

The hobbyist told the AP he suspected there were more coins beneath the surface after his metal detector continued picking up signals.

"It was clear to me there was something bigger buried here," he said.

The coins were likely buried intentionally between 125 and 150 A.D., according to the LVR Office for the Preservation of Archaeological Monuments in the Rhineland.

The staggering hoard weighs 6.8 pounds and is currently on display at the LVR-LandesMuseum Bonn.

The most striking aspect of the hoard was its unusual size, said Johannes Wienand, a professor of ancient history at the Technical University of Braunschweig in Germany.

Wienand was not involved in the discovery or its research but told Fox News Digital the hoard is "a huge treasure."

"It's a time capsule of the money the people in that period actually used day by day."

A Roman legionary would have earned a gross salary of around 300 denarii per year, Wienand said, meaning the hoard was roughly equivalent to three years of a soldier's gross salary.

"A Roman soldier would need six, seven, eight, even more years to save this amount of money, maybe for his retirement," he said.

While a military connection is possible, Wienand said the identity of the hoard's owner remains unknown.

"It seems to have been the life savings of one person who put this treasure together and put it in a pot, buried it in the soil to save it for later," Wienand said.

"And obviously the owner was never able to recover this treasure."

Above all, Wienand said the discovery highlights the importance of responsible metal detecting and reporting archaeological finds.

"It's actually a story of how to do things right," he said. "The metal detectorist was licensed. He had permission to look for finds like that. He immediately called the heritage officers."

"These coins and this hoard [are] now part of our cultural heritage. And I think that's a very good outcome of this story."

The Associated Press contributed reporting.