A discovery of more than 30,000 ancient Roman coins may point the way to a hidden shipwreck

• An amateur diver spotted something unusual peaking out of the seabed off the coast of Italy. 
• It turned out to be 30,000 to 50,000 ancient Roman bronze coins dating back to the 4th century. 
• Italy's ministry of culture said it could point to a hidden shipwreck in the area. 

A diver made a rare discovery while exploring a seabed off the coast of Sardinia, Italy: 30,000 to 50,000 ancient Roman coins that may be evidence of a nearby hidden shipwreck more than a thousand years old.