Talking Pyramids: Ancient Egyptian Pyramids

In another example of the use of satellites to discover archaeological sites, yesterday at a satellite imagery conference in Rome it was announced that an ancient adobe pyramid near Peru’s Cahuachi desert has been discovered with the aid of a new remote sensing technology:

Nicola Masini and Rosa Lasaponara of Italy’s National Research Council (CNR) discovered the pyramid by analyzing images from the satellite Quickbird, which they used to penetrate the Peruvian soil.

The researchers investigated a test area along the river Nazca. Covered by plants and grass, it was about a mile away from Cahuachi’s archaeological site, which contains the remains of what is believed to be the world’s biggest mud city.

Via Quickbird, Masini and colleagues collected hi-resolution infrared and multispectral images. After the researchers optimized the images with special algorithms, the result was a detailed visualization of a pyramid extending over a 9,000-square-mile area.

The discovery doesn’t come as a surprise to archaeologists, since some 40 mounds at Cahuachi are believed to contain the remains of important structures.

“We know that many buildings are still buried under Cahuachi’s sands, but until now, it was almost impossible to exactly locate them and detect their shape from an aerial view,” Masini told Discovery News. “The biggest problem was the very low contrast between adobe, which is sun-dried earth, and the background subsoil.”…

“Up to now, we have completely unearthed and restored a huge asymmetrical pyramid, known as the Grand Pyramid. A terraced temple and a smaller pyramid are in an advanced state of excavation,” Giuseppe Orefici, an archaeologist who has spent decades excavating Cahuachi and has also worked with the CNR researchers, wrote in the conference paper.
Featuring a 300-by-328-foot base, the newly discovered pyramid consists of at least “four degrading terraces which suggest a truncated pyramid similar to the Grand Pyramid.” With seven levels, this imposing monument was sculpted from the landscape and enhanced by large adobe walls….

“This innovative technology opens up new perspectives for the detection of buried adobe monuments in Cahuachi and elsewhere,” said Masini. “Once we have more information about the size and shape of the structures, we might turn to virtual archaeology to bring the pyramid and its nearby structures back to life.”

Read the full story by Rossella Lorenzi of Discovery News, Ancient Peru Pyramid Spotted by Satellite.

Tags: satellite, technology