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.”
Header Image Credit : Yamagata University
Maya tomb with funerary offerings found during hotel construction
A tomb with funerary offerings has been uncovered during the construction of the Tren Maya Hotel, in Palenque, Mexico.
Archaeologists from the National Institute of Anthropology and History (INAH) conducted rescue excavations following the discovery, revealing skeletal remains associated with the Maya city of Palenque.
Palenque, also known as Lakamha in the Itza Language (meaning “Flat-Place-River”), is located near the Usumacinta River in the Mexican state of Chiapas.
The city dates from 226 BC to AD 799, with most of the major construction works representing a rebuilding effort in response to attacks by the city of Calakmul and its client states in AD 599 and AD 611.
The population declined during the 8th century AD, instead becoming an agricultural population that led to the abandonment of the city zone. By 1520 following the Spanish conquest, contemporary Spanish accounts record the entire region being sparsely populated.
Excavations uncovered a stone lined funerary space sealed with limestone slabs, in which the researchers found the remains of a high-status individual who likely lived in the periphery of Palenque in a small settlement.
The burial is located at a depth of four metres, and also contained ceramic vessels and beads deposited as funerary offerings.
“The individual was placed face up with his legs extended and his head facing north,” said Diego Prieto Hernández from INAH.
The discovery was announced in a press conference reporting on the progress of the Program for the Improvement of Archaeological Zones (Promeza) in Palenque, Moral-Reforma and El Tigre, the three heritage sites that are served within Section 1 of the Mayan Train Project.
Header Image Credit : INAH
Archaeologists unearth possible birthplace of King Henry VII at Pembroke Castle
Archaeologists from the Dyfed Archaeological Trust may have discovered the possible birthplace of King Henry VII at Pembroke Castle in Pembrokeshire, Wales.
Pembroke Castle was founded during the 11th century by Roger de Montgomerie, the 1st Earl of Shrewsbury.
In 1452, Jasper Tudor was presented both the castle and the earldom by his half-brother, King Henry VI. In 1457, Henry VII was born at the castle, the only child of Lady Margaret Beaufort and Edmund Tudor, 1st Earl of Richmond.
Following Edward IV’s ascension to the throne in 1471, Henry VII endured 14 years of exile in Brittany. He eventually claimed the throne after his forces, with backing from France, Scotland, and Wales, emerged victorious over Richard III at the Battle of Bosworth Field, marking the climax of the Wars of the Roses.
Henry VII’s reign is credited with many administrative, economic, and tax reforms, having ruled for nearly 24 years until his death in 1509 at the age of 52. Henry VII was succeed by his second son, Henry, Duke of York, who ascended to the crown as Henry VIII.
Historians have long assumed that a 13th century tower on the outer ward (known today as Henry VII Tower) was the birth place of Henry VII. However, a recent study by the Dyfed Archaeological Trust has uncovered evidence of a late-medieval winged hall-house, broadly dating to the 15th century.
The walls of the structure extend to around 25 metres, with comparisons being drawn to medieval buildings found in England and East Wales, such as Penallt Mansion in Kidwelly. Historically, Pembroke Castle was situated in the English-speaking portion of Pembrokeshire, often referred to as “Little England beyond Wales.”
Speaking to the Western Telegraph, Neil Ludlow, a consultant to Pembroke Castle, said: “All our indications are pointing to a late-medieval building which was clearly of high status within Pembrokeshire, and it looks as if it was at least two-storeys, which possibly makes it a better candidate for the birthplace of a king rather that the tower that currently bears his name.”
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