The Roman Dodecahedra
These fist-sized bronze Roman artifacts found in France, Switzerland and Germany pose a fascinating problem for archaeologists: they just don’t have a clear purpose, but many are covered in symbols, some undecipherable and others relating to the Zodiac. But for all the speculation on their use, including that they may have been surveying instruments, some experts believe the Roman dodecahedra were merely decorative candlesticks.
The Giant Stone Spheres of Costa Rica
They appear to be flawlessly round, ranging in size from just a few centimeters to over 6.6 feet in diameter, and are found all over the Diquis Delta and Isla de Cano in Costa Rica. Weighing up to 16 tons, it’s hard to imagine how humans could have moved these gigantic sculptures hewn from hard granodiorite – considering that the nearest quarry for that material is over 50 miles away from where the sculptureswere found. Over three hundred of them are scattered across Costa Rica, but we’ll never know why – the people who made them back in 1,000 C.E. are long gone and had no written records.
The Maine Penny
When a genuine Norse coin dating to the early 11th century was found among Native American ruins in Maine in 1957, it seemed to offer an intriguing piece of evidence that Vikings did indeed travel further south than Newfoundland long before the time of Christopher Columbus. And it could be so – but experts have their doubts. The fact that the ‘Maine Penny‘ was the only Norse artifact found at the site seems to indicate that it came to the site through native trade channels from Viking sources in Labrador and Newfoundland.