Archaeology
Archaeologists use muography to reveal hidden chamber in Naples
A team of archaeologists have used muography to reveal a hidden chamber in the necropolis of Neapolis in Naples, Italy.
Neapolis was a Greek city founded during the 3rd century BC, whose remains are located around 10 metres beneath the current street level in the Sanità neighbourhood of present-day Naples.
The city emerged as an important trading centre in Magna Graecia and the Mediterranean, but would eventually be absorbed into the expanding Roman Republic around 327 BC.
The study was conducted by the University of Naples Federico II and the National Institute of Nuclear Physics (INFN), in collaboration with the University of Nagoya (Japan).
The team applied muography, a technique that uses cosmic ray muons to generate three-dimensional images of volumes using information contained in the Coulomb scattering of the muons.
Since muons are much more deeply penetrating than X-rays, muon tomography can be used to image through much thicker material than x-ray based tomography such as CT scanning.
Several detectors capable of detecting muons were placed underground in the highly populated “Sanità” district at a depth of 18 metres to measure the muon flux over several weeks.
Measurements of the differential flux in a wide angular range have enabled the researchers to produce a radiographic image of the upper layers that has revealed known and unknown structures beneath the ground surface.
One of the most interesting structures is an inaccessible hidden chamber from the Hellenistic period, which according to the researchers likely contains a burial.
“From the number of muons that arrive at the detector from different directions, it is possible to estimate the density of the material they have passed through,” said lead author Valeri Tioukov, a researcher at the INFN of Naples. “We found an excess in the data that can only be explained by the presence of a new burial chamber.”
https://doi.org/10.1038/s41598-023-32626-0
Header Image Credit : Tioukov, V., Morishima, K., Leggieri, C. et al
A recent study, published in the journal ResearchGate, proposes that the Pyramid of Djoser could have been constructed using hydraulic lift.
The Pyramid of Djoser, also known as the Step Pyramid, is a proto-pyramid built as the final resting place of Djoser, the first or second pharaoh of Egypt’s 3rd Dynasty (2670–2650 BC) during the Old Kingdom period.
The pyramid rises from the Saqqara plateau in six steps to a height of around 60 to 62 metres, serving as the centre of a vast mortuary complex.
Due to the absence of authentic sources from the pyramid architects’ working sphere, there is currently no confirmed comprehensive model for the method used in the pyramid construction.
The prevailing theory suggests that the heavy stone blocks were transported on apparatuses such as rollers, and raised to height using a series of ramps.
In the study, a survey of watersheds near to the pyramid indicate that the Gisr el-Mudir (enclosure) has features of a check dam for trapping sediment and water. Furthermore, the topography beyond the “dam” shows a possible ephemeral lake west of the Djoser complex, and water flow inside the moat surrounding it.
The study authors explain: “In the southern section of the moat, we show that the monumental linear rock-cut structure consisting of successive, deep compartments, combines the technical requirements of a water treatment facility: a settling basin, a retention basin, and a purification system.”
Based on this finding, the study proposes that the Gisr el-Mudir and moat’s inner south section worked as a unified hydraulic system for regulating flow and improving water quality. In addition, the pyramid’s internal architecture is consistent with a hydraulic elevation mechanism never reported before.
“The ancient architects likely raised the stones from the pyramid centre in a volcano fashion using the sediment-free water from the Dry Moat’s south section. Ancient Egyptians are famous for their pioneering and mastery of hydraulics through canals for irrigation purposes and barges to transport huge stones. This work opens a new line of research: the use of hydraulic force to erect the massive structures built by Pharaohs,” said the study authors.
Please note: This study was submitted to PLOS ONE on December 7, 2023. After two rounds of review by peers, the paper was formally accepted by PLOS ONE on June 27, 2024. Since July 23, 2024, it has been the subject of new consultations and review by the PLOS ONE Editorial Board.
Header Image Credit : Shutterstock
Sources : ResearchGate | Piton, Guillaume. (2024). On the possible use of hydraulic force to assist with building the Step Pyramid of Saqqara. PLOS ONE.
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
Constructed between 1630 and 1633 in a Renaissance-Baroque style, the Great Synagogue of Vilnius served as the religious centre of a complex of synagogues, mikvahs, and community institutions devoted to Torah study in Vilnius, Lithuania.
According to a press statement by the Israel Antiquities Authority (IAA): “The Great Synagogue of Vilna was the beating heart of the Lithuanian Jewry, which included 12 synagogues and study houses, the community council building, the home of Rabbi Eliyahu – the Vilna Gaon, Kosher meat stalls, the famous ‘Strashun’ library, a bathhouse and more.”
During World War II, the synagogue was looted, burned, and partially destroyed by the Nazis in the holocaust. Soviet authorities completely demolished the remaining structure to build a school, intending to prevent any future restoration of Jewish worship.
Only three original pieces of the synagogue survived the destruction: a door of the Holy Ark, a reader’s desk, and a bas-relief with the Ten Commandments, which are now on display at the Vilna Gaon Jewish Museum.
Image Credit : Israel Antiquities Authority
In a recent study conducted by the IAA, the Association of Lithuanian Archaeology, the Good Will Foundation, and the Jewish Community of Lithuania, archaeologists have rediscovered traces of the synagogue’s decorated walls and remnants of flooring with red, black, and white floral patterns that paved the main hall.
Excavations also uncovered huge water reservoirs to feed halachically pure water to the mikva’ot, and one of the giant pillars that surrounded the Bimah (prayer platform).
Dr. Jon Seligman from the IAA and Justinas Rakas from the Lithuanian Archaeological Society, said: “The magnificent remains we are rediscovering bring back moments in the life of a lost vibrant community.”
Header Image Credit : Israel Antiquities Authority
Sources : IAA
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
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