The sinkhole is 10 feet long and opened unexpectedly on an otherwise quiet Sunday afternoon on a cobblestoned street in the Piazza della Rotunda, near the Pantheon’s front steps.The area had been closed to the public at the time so no one was injured, but during tourist season the event could have caused much more damage.A sinkhole opened up on the streets of Rome, revealing seven well preserved paving stones dating back to 27BCRELATED ARTICLES Previous 1 NextIgnore foodie snobs: Keeping tomatoes in the fridge or at. ‘Car wash’ for supermarket trolleys that claims to leave. Facebook Messenger will use AI to spot signs of scams and.What is the Pantheon? The Pantheon is the most intact of all Roman structures in the Italian capital.With a graceful dome perched high above a massive circular chamber, it is lit by sunlight streaming through the 30ft hole at the dome’s apex.An architectural masterpiece, no one quite knows how they rendered such a large dome from concrete.Most believe, however, that the hole in its roof is a testament to Rome’s warm climate.The Pantheon meaning ‘to every god’ was commissioned as a temple to all the gods of Ancient Rome, and rebuilt by Emperor Hadrian in about 126 AD.It has been in continuous use throughout its history and, since the 7th century, has been used as a Roman Catholic church.It was built on top of an earlier temple from the rein of Augustus in as far back as 27BC.This rich history makes it a treasure trove for discoveries.The paving stones below the surface appear to have been used in the streets around the Pantheon when it was first built, and which were subsequently paved over after a series of reconstruction projects in the first century AD.According to a report in the Smithsonian, city officials had been aware the ancient paving stones were present below the surface but decided against any larger excavation project, fearing it would be disruptive.The paving stones were unusually well preserved because they were mostly surrounded by pozzolan, a type of dirt with significant amounts of silicon dioxide that absorbs excess moisture and can help prevent rot.The paving stones themselves were made from travertine, a common building material in ancient Rome used in the Coliseum and many of the city’s triumphal arches, which was easily sourced from quarries outside the city.Sinkholes have been a common phenomenon in Rome, with over 100 openings recorded in 2019, and 175 in 2018.They’re caused by the destabilizing combination of the region’s sandy soil and layers of old ruins that much of the modern city was built atop, which weaken the ground above.The sinkhole opened on a Sunday afternoon at a time when thePiazza della Rotunda was closed to the public, which helped ensure no one was injuredThe seven slabs of paving stones were made from travertine, a commonly available building material sourced from nearby quarries in the countryside that was also used to build the ColiseumSinkholes have become a surprisingly common phenomenon in Rome, with 100 reported in 2019, and 175 in 2018, caused by the city’s sandy and unstable ground and the layers of ancient structures buried beneath the surface’The most sensitive area is eastern Rome, where materials were quarried in ancient times,’ geologist Stefania Nisio told Adnkronos.’The main cause of a sinkhole in the city is the presence of an underground cavity.’In 2018, Rome announced an $18.6 million project to reduce the number of sinkholes around the city, which mostly appear in the form of potholes rather than major historical sites.The site of the Pantheon is a treasure drove for discoveries because it was built atop a temple from the time of Augustus in 27BC, which was destroyed in a fire..

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