Connect with us

Archaeology

Nazca geoglyphs discovered used AI deep learning

Published

on

Archaeologists from the Yamagata University have used AI deep learning to discover new geoglyphs in the northern part of the Nazca Pampa in the arid Peruvian coastal plain.

Geoglyphs in the Nazca Pampa were first identified during the 1920’s, with ongoing studies since the 1940’s revealing various figurative geoglyphs of zoomorphic designs, geometric shapes, and linear lines.

Geoglyphs can be categorised into three main types: figurative, geometric, and lineal. Archaeologists suggest that the lineal geoglyphs were created by the Nazca, a culture that developed during the Early Intermediate Period and is generally divided into the Proto Nazca (phase 1, 100 BC to AD 1), the Early Nazca (phases 2–4, AD 1 to 450), Middle Nazca (phase 5, AD 450 to 550) and the Late Nazca (phases 6–7, AD 550 to 750).

The relief type dates from the Late Formative period (400 to 200 BC), as the iconography of the geoglyphs are similar to that of Formative petroglyphs found on outcrops of rock. During this period, the region was inhabited by the Paracas Culture, an Andean people that emerged around 800 BC until 100 BC.

Since 2004, Yamagata University has been conducting geoglyph distribution surveys using satellite imagery, aerial photography, airborne scanning LiDAR, and drone photography to investigate the vast area of the Nazca Pampa covering more than 390 km2.

In 2016, the researchers used aerial photography with a ground resolution of 0.1 m per pixel to create a detailed survey of the region. Overtime, the team have identified various geoglyphs, however, the process is very time consuming, so they have adopted AI deep learning to analyse the photographs at a much faster rate.

The results of a study, published in the Journal of Archaeological Science, has revealed the discovery of four new Nazca geoglyphs using this new method by creating an approach to labelling training data that identifies a similar partial pattern between the known and new geoglyphs.

The four new geoglyphs depict a humanoid figure, a pair-of-legs, a fish, and a bird. The humanoid geoglyph is shown holding a club in his/her right hand and measures 5 metres in length. The fish geoglyph, shown with a wide-open mouth measures 19 metres, while the bird geoglyph measures 17 metres and the pair-of-legs 78 metres.

According to the study authors: “We have developed a DL pipeline that addresses the challenges that commonly arise in the task of archaeological image object detection. Our approach allows DL to learn representations of images with better generalisation and performance, enabling the discovery of targets that have been difficult to find in the past. Moreover, by accelerating the research process, our method contributes to archaeology by establishing a new paradigm that combines field surveys and AI, leading to more efficient and effective investigations.”

Yamagata University

https://doi.org/10.1016/j.jas.2023.105777

Header Image Credit : Yamagata University

Continue Reading

Archaeology

Dune restoration project uncovers intact WWII bunkers

Published

on

By

A restoration project to remove invasive plants from dunes in the Heist Willemspark, Belgium, has led to the discovery of three intact WWII bunkers.

Heist Willemspark is located in the Knokke-Heist municipality, situated on the coastline of Belgium near the border with the Netherlands.

During WWI, the area of the park was used as a German position for heavy artillery batteries known as “Freya” and “Augusta”, and a series of forward observation bunkers for ranging shipping in the English Channel.

A number of these structures were repurposed by the German army in WWII, and further fortified as part of the Atlantic Wall, a system of coastal defences built between 1942 and 1944 along the coast of continental Europe. The area of the Atlantic Wall at Heist Willemspark was designated by the German army as Stützpunkt Heyst.

Image Credit : Municipality of Knokke-Heist

According to a press statement by the Municipality of Knokke-Heist, the bunkers were discovered by the Agency for Nature and Forests during a restoration project called LIFE DUNIAS.

Excavations at a depth of only a few feet revealed three Gruppenunterstand Type VF2a bunkers. The VF2a is intended for housing a Gruppe (the smallest German unit consisting of 10 soldiers) who operated forward radar positions. The bunkers at Heist Willemspark measure 6 by 7 metres externally, and are capped by a concrete reinforced roof measuring 1 metre thick.

The project also found traces of brick trenches, a fragment of a concrete track, and large amounts of rubble containing objects such as utensils, ammunition, cabling, and water pipes.

A representative of LIFE DUNIAS said: “These ruins illustrate the previous attempts to completely erase the park’s war history. The lighter structures were demolished and reduced to rubble, while heavier bunkers were covered with a layer of soil and hidden, as if they had never existed.”

Header Image Credit : Municipality of Knokke-Heist

Sources : Municipality of Knokke-Heist

This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily

Continue Reading

Archaeology

Recent findings shed light on the “Lost Colony” of Roanoke

Published

on

By

Ongoing excavations by archaeologists from The First Colony Foundation have revealed new findings on the historical narrative of the “Lost Colony” of Roanoke.

The Roanoke Colony refers to two colonisation attempts in North America by Sir Walter Raleigh during the 16th century.

Raleigh’s aim was to stake England’s claim to the largely unknown (to Europeans) landmass of North America, and from which he could launch raids on the Spanish West Indies and annual treasure fleets.

The first attempt was made in 1585 on Roanoke Island, located in present-day Dare County, North Carolina.

According to accounts by the returning expedition leaders, the colonists had established friendly relations with the indigenous people (the Secotan), describing the land as “pleasant and bountiful.”

In reality, the colony was troubled by a lack of supplies and poor relations with the Native Americans, resulting in the colony being abandoned in 1586.

A second attempt was made in 1587 in the area of Chesapeake Bay, however, upon returning to the colony in 1590, it was found fortified with a palisade and that the settlers had vanished without a trace.

The search for what happened to the English settlers has recently focused on the Elizabethan Gardens in the town of Manteo, where archaeologists have uncovered evidence of a farmstead belonging to the “Algonquian village of Roanoke” (also spelled Roanoac), an Indigenous community that hosted the settlers in 1584.

Excavations in March 2024 have uncovered shards of Algonquian pottery dating back to the 1500s, along with a ring of copper wire (made of drawn copper) likely worn by an Algonquian warrior.

Archaeologists speculate that the ring was brought to North America by the English settlers and traded with the indigenous people who believed that copper had spiritual significance.

“Finding domestic pottery—the type used for cooking—in close proximity to an apparent piece of Native American jewellery strongly confirms we are digging in the midst of a settlement,” said Dr. Eric Klingelhofer, the First Colony Foundation’s Vice President of Research. “And Roanoac is the only known village at that site. The copper ring indicates contact with the English,” added Klingelhofer.

Previous excavations suggest that the village had a palisade with around nine internal houses for the elite warrior class. Those of a lower status or working class lived outside the palisade on farmsteads where they worked the land raising crops.

“The new findings confirm a theory that matches what we know of the village,” added Klingelhofer. “It was described as a palisaded village because the explorers came here and recorded it. And these findings add to our story.”

Another exploration is scheduled for the summer of 2024 at nearby Fort Raleigh National Historic Site. The goal is to find evidence of the colonists’ original settlement.

Header Image Credit : John Parker Davis – Public Domain

Sources : The First Colony Foundation

This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily

Continue Reading

Trending

Generated by Feedzy