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archaeologist in Israel have unearthed a mysterious Canaanite arch and vaulted stairway sealed inside a well - uphold mud brick building that go out to 3,800 years ago , during the Middle Bronze Age . The archaeologists have no idea why the arch was construct .

The team had antecedently dig a long corridor head to the arch and stairway at the archeological site of Tel Shimron , but they were blown off by the saving of the newfound structures , calling them " breathless , especially since the building material is unfired ( ! ) clay brick — a material that only rarely survives a long time,“Mario A.S. Martin , Centennial State - director of the mining at Tel Shimron and an archeologist at the University of Innsbruck in Austria , told Live Science in an electronic mail .

Photograph of an aerial view of an archaeological site and an excavated steel structure.

An aerial view of a steel structure supporting the corridor to the corbelled vault at the Tel Shimron archaeological site.

" Of course you never know what you find at a website that has never been excavated , but I can say with self-confidence that nobody … expect to recover what we did , " Martin added .

The archway is corbelled , intend the hurdle was created by set off brick like an invert stairway rather than with wedge - determine Stone , which are typically used to build up " true " arches . This so - called " false " arch and stairway stands more than 16 feet ( 5 meters ) grandiloquent and include around 9,000 brick , Martin said .

The ancient Mesopotamins are lie with for using brick to make such corbelled twist , but it ’s never been launch in the southern Levant , the realm east of the Mediterranean , from this time , he say .

Photograph of mudbrick stairs through narrow passageway.

The mudbrick stairs within the passageway are blocked by intentional gravel backfill and large boulders at Tel Shimron.

Not long after the corridor and stairway were built — only about one or two generations — ancient workers backfilled both with sediment . However , it ’s unclear why these structures were sealed off , and it deepens the mystery as to why the Canaanites set up it in the first place .

" Why the passageway went out of use so shortly is a matter of speculation , fact is that it was done with full purpose , and not because there was some close at hand danger of crash , " Martin articulate . " For us archeologist , the immediate backfill is the most golden musical composition of the whole narrative , since it is the only reason the lineament is so implausibly well continue almost 4,000 years later . "

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A clay bowl object with various circular containers.

A Nahariya bowl unearthed during excavations at Tel Shimron.

TheCanaaniteslived in the southern Levant between 3,000 and 4,000 old age ago . There is no grounds to intimate the Canaanites were ever unite politically or ethnically as a single realm , Ann Killebrew , an archeologist and associate prof at Penn State University , indite in her book " Biblical Peoples and Ethnicity : An Archaeological Study of Egyptians , Canaanites , Philistines , And Early Israel 1300 - 1100 B.C.E. " ( Society of Biblical Literature , 2005 ) .

" Canaan was not made up of a exclusive ' pagan ' group but consisted of a population whose variety may be hinted at by the slap-up variety of burial impost and cultic body structure , " Killebrew write .

The newly excavated building , which sits within the ancient acropolis of Tel Shimron in the fertile Jezreel Valley , may have served a cultic function , archaeologist told the Israeli newspaperHaaretz . Inside the passageway and before a piercing left number that leads to the massive arch , they discovered a seven - cupped clayware artifact make out as a Nahariya bowl , which was used for ritual offerings in the Middle Bronze Age .

A photomosaic of a vaulted passageway with round arched entryways and a staircase.

A virtual photomosaic of the vaulted passageway at Tel Shimron.

Other clues suggest at cultic tradition within Tel Shimron , which sprawled across the top of a hill and was surround by monumental ramparts during its heyday . Previous excavations of another mud brick structure within the acropolis uncover 30,000 off-white belong to animate being that were likely sacrificed , the archaeologists sound out .

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Having dug their way past the arch , archaeologists come upon stairs leading deeply underground and beyond the edifice ’s walls . The stairway could take years to turn up , they say , because it likely extend beneath other thin Bronze Age smash that might crack up if they remove the territory .

" We will only realise the full significance of the corridor and the vaulted passageway ( and where it incisively leads to ) , once we dig up more of the environs and beyond the plugged staircase , " Martin told Live Science .

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Until they find a agency to safely hollow the enigmatic stairway , archaeologists have reburied the passage and arch to protect them from harm .

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