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Off The Grid


Monday, April 06, 2015

Trenches Off The Grid Pinson Mound


Tennessee is rich in Native American heritage, including collections of mounds and other earthworks built by large ancient communities, some with ritual functions and others to contain burials. Unfortunately, most of these sites have been destroyed over the years to make way for farms, highways, and new buildings. The Pinson Mounds complex, however, located in western Tennessee, has survived largely intact and is the biggest archaeological mound site in the American Southeast. Today the complex covers more than 400 acres with at least 45 man-made mounds, and there were probably more in the past. Of these, 17 are easily visible today and five are large rectangular platform mounds up to 70 feet tall. Built during the Middle Woodland Period (ca. 200 B.C.–A.D. 400), the mounds became a major pilgrimage center for people across the region—from as far away as Georgia and Louisiana. According to Tim Poole, Manager of Pinson Mounds State Archaeological Park, the monuments are evidence of “great skills in mathematics, geometry, and physics.”


The site

The Pinson Mounds complex is located within the 1,250-acre Pinson Mounds State Archaeological Park, and visitors can explore six miles of walking trails in and around the mounds. The largest mound is Sauls’ Mound, at 72 feet the second tallest mound in North America, after Monks Mound at Cahokia in Illinois. The steep, wooded mound has a staircase for climbing to a viewing platform at the top, where, on a clear day, one can see for 14 miles. Some people believe, says Poole, that it took more than a century to build Sauls’ Mound—a single basket of earth at a time. Another intriguing earthwork is the Eastern Citadel, a low geometric ritual enclosure that forms a near-perfect semicircle 1,200 feet across.


Some of the other earthworks at the site were constructed specifically for burial of the dead. The largest of these, the Twin Mounds (or Mound 6), consists of a pair of intersecting conical mounds, each about 23 feet tall and 80 feet in diameter. Partial excavation of the northern Twin Mound provided a rare view of a large, undisturbed Middle Woodland burial: the tomb of three men with eight women surrounding them in a circle, all buried wearing headdresses and copper jewelry.


While you’re there

After walking the park’s trails, visitors should check out the Pinson Mounds Museum, built within a replica of a platform mound. Downtown Jackson, Tennessee, is only nine miles away, and has great restaurants and the Casey Jones Village, complete with an old-time general store. Jackson also has a railroad museum and another dedicated to rockabilly. And if that’s not enough history and music, Nashville is only two hours east on I-40.

The Charred Scrolls of Herculaneum


Monday, April 06, 2015

Trenches Herculaneum Villa of the PapyriHerculaneum’s Villa of the Papyri was one of the most luxurious Roman properties to have been buried by the eruption of Mount Vesuvius in A.D. 79. The sprawling waterfront estate (on which the J. Paul Getty Museum in Los Angeles is modeled) likely belonged to Lucius Calpurnius Piso, father-in-law of Julius Caesar. It contained countless masterpieces of ancient art, but its greatest treasure might have been its library—and the nearly 1,800 papyrus scrolls that were discovered there in the mid-eighteenth century. It is the only library from antiquity to have survived. When Vesuvius erupted, the Villa of the Papyri was hit by a 600-degree Fahrenheit blast of hot gas and ash, which instantly carbonized the papyrus scrolls, transforming them into charred cylindrical lumps, and, surprisingly, preserving them. Since their discovery more than 250 years ago, scholars have attempted to unroll and translate the fragile scrolls, many of which contain Greek texts on Epicurean philosophy, particularly some written by the philosopher Philodemus. Recently, a team of scientists has pioneered a new, safer method of deciphering the texts. Since unrolling causes irreparable harm to the brittle artifacts, researchers have turned to noninvasive technologies such as X-rays, digital photography, and microscopy. “The results show that it is possible to read the Herculaneum papyri without needing to open them, which always involves the risk of damage and loss of content,” says Vito Mocella of the National Research Council in Italy, which leads the project.


Trenches Papyrus Roll LettersViewing the writing on the interiors of the rolled-up scrolls, however, remains difficult. A major obstacle is the physical similarity of the ink and the papyrus. The Romans used a carbon-based ink made from smoke residues, which has a similar density to the carbonized papyrus, making it hard to distinguish between them, even with advanced technologies. The recent experimental project, which took place at the European Synchrotron Radiation Facility in France, employed X-ray phase-contrast tomography (XPCT). XPCT is particularly useful in identifying the characteristics of hidden, internal structures. This procedure is able to detect subtle differences in the way X-rays are absorbed or refracted, even among similar substances. “It was clear to me that this technique could be decisive for reading the Herculaneum papyri, although to do this it was necessary to push the potential of this experimental technique,” says Mocella.


Trenches X Ray Papyrus ScrollThe team examined two scrolls, housed at the French Institute, that had been given to Napoleon in 1802. Using XPCT, they were able to identify individual Greek letters as well as words, even within the interior sections of the rolled-up scrolls. Further, by analyzing the handwriting style on these papyri, they were able to date the text to between 75 and 50 B.C. Its resemblance to text in other Herculaneum papyri led the team to conclude that one of their papyri likely contains an unknown work by Philodemus. The project is not capable of—nor concerned at this time with—unveiling whole, coherent Greek phrases, but rather in refining the technique. “We will definitely be able to read significant portions of text,” says Mocella. “Until now this has been a project driven by curiosity, and we are waiting for further support.”


Many of the ancient world’s literary masterpieces remain lost—for example, only seven of the purported 123 plays of Sophocles exist today. It remains to be seen what unknown works might lie among the unread Herculaneum papyri. But according to Mocella, there is a real possibility of recovering long-vanished classics of ancient Greek and Roman literature, especially since additional scrolls may still be discovered in the unexcavated parts of the villa.