Scientists Solve an Ancient Stonehenge Mystery: Where the Massive Rocks Came From

iStock.com/Onfokus
iStock.com/Onfokus

It's one of the greatest archaeological mysteries of all time: How did Neolithic peoples build Stonehenge—a massive, bluestone structure in an area where no stones of that kind can be found? As CNN reports, a new study answers some of the questions the site raises and puts other theories to rest.

The first stage of Stonehenge, located in what's now Salisbury, England, was built roughly 4000 years ago. Archaeologists have known for a while that the bluestones used to make Stonehenge originated from quarries in Pembrokeshire, Wales, 150 miles away, but how the stones arrived at their current spot is less clear. According to one theory, humans spent months transporting the materials, possibly with wooden sleighs on rollers, oxen, or river rafts.

Other experts insist that it would have been impossible to transport the 25-ton rocks such a great distance using primitive technology. Instead, they say the stones were placed there by glacial activity.

The new study published in the journal Antiquity debunks that idea. Archaeologists and geologists from the UK studied the smaller rocks used to build Stonehenge and pegged them to two quarries in the Preseli Hills of Wales. Upon visiting the sites, they discovered traces of tools, stone wedges, and digging activity. The evidence dates back to 3000 BCE, the same time when construction on Stonehenge started.

The results also dispel previously held beliefs concerning the rocks' origins. Though it's widely accepted that the stones came from the Preseli Hills, this study is the first to trace them to two specific quarries on the north side of the hills—Carn Goedog and Craig Rhos-y-felin. It was thought for nearly a century that the rocks were excavated from the opposite side.

The research team says their findings suggest that materials used to make Stonehenge were moved by purposeful human activity rather than freak natural forces. But the study still leaves some questions unanswered, such as how the ancient peoples were able to transport the rocks 150 miles after digging them up. The fact that the rocks came from the north side of the Preseli Hills suggests they were dragged over land rather than transported by river—though the exact methods used remain a mystery .

[h/t CNN]

Mastodon Bones Have Been Discovered by Sewer Workers in Indiana

Thomas Quine, Flickr // CC BY 2.0
Thomas Quine, Flickr // CC BY 2.0

When something unexpected happens during a sewer system project, the news is not usually pleasant. But when workers installing pipes in Seymour, Indiana stopped due to an unforeseen occurrence, it was because they had inadvertently dug up a few pieces of history: mastodon bones.

According to the Louisville Courier Journal, workers fiddling with pipes running through a vacant, privately owned farm in Jackson County happened across the animal bones during their excavation of the property. The fossils—part of a jaw, a partial tusk, two leg bones, a vertebrae, a joint, some teeth, and a partial skull—were verified as belonging to a mastodon by Ron Richards, the senior research curator of paleobiology for the Indiana State Museum and Historic Sites. The mastodon, which resembled a wooly mammoth and thrived during the Ice Age, probably stood over 9 feet tall and weighed more than 12,000 pounds.

The owners of the farm, the Nehrt and Schepman families, plan to donate the bones to the Indiana State Museum in Indianapolis if the museum committee decides to accept them. Previously, mastodon bones were found in Jackson County in 1928 and 1949. The remains of “Fred the Mastodon” were discovered near Fort Wayne in 1998.

[h/t Louisville Courier Journal]

Middle School Student Discovers Megalodon Tooth Fossil on Spring Break

iStock.com/Mark Kostich
iStock.com/Mark Kostich

A few million years ago, the megalodon was the most formidable shark in the sea, with jaws spanning up to 11 feet wide and a stronger bite than a T. Rex. Today the only things left of the supersized sharks are fossils, and a middle school student recently discovered one on a trip to the beach, WECT reports.

Avery Fauth was spending spring break with her family at North Topsail Beach in North Carolina when she noticed something buried in the sand. She dug it up and uncovered a shark tooth the length of her palm. She immediately knew she had found something special, and screamed to get her family's attention.

Her father recognized the megalodon tooth: He had been searching for one for 25 years and had even taught his three daughters to scour the sand for shark teeth whenever they went to the beach. Avery and her sisters found a few more shark teeth that day from great whites, but her megalodon fossil was by far the most impressive treasure from the outing.

Megalodons dominated seas for 20 million years before suddenly dying out 3 million years ago. They grew between 43 and 82 feet long and had teeth that were up to 7.5 inches long—over twice the size of a great white's teeth. They're thought to be the largest sharks that ever lived.

Megalodon teeth have been discovered on every continent except Antarctica, but they're still a rare find. Avery Fauth plans to keep her fossil in a special box at home.

[h/t WECT]

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