researcher say theyhave madeone of the most meaning archeological findings in British chronicle : a   vast Isidor Feinstein Stone repository underground , dating back 4,500 years , which is part of a “ super - henge ” that dwarf Stonehenge by a factor of 12 .

The unbelievable discovery was made beneath theDurrington Wallssuper - henge , which is about 1.5 kilometers ( 0.93 Admiralty mile ) wide and locate about three kilometers ( 1.9 miles ) from Stonehenge in Wiltshire , U.K. The freshly break monument consist of about 90 stones bury under the site ’s banks . If confirmed , it would be the largestNeolithicmonument in Britain .

The discovery was made using ground - penetrating radar to scan the area . Some of the stones , which are up to 0.9 meters ( three substructure ) underground , are as improbable as 4.5 meters ( 15 feet ) . They are conceive to be sarsen gem –   sandstone block found mainly on the Salisbury Plain and elsewhere in Wiltshire .

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“ This discovery of a major new stone monument , which has been preserve to a singular extent , has significant implication for our agreement of Stonehenge and its landscape setting , ” said Professor Vincent Gaffney of the University of Bradford , who co - direct the research , in astatement .

“ Not only does this Modern grounds demo a completely unexpected phase of massive computer architecture at one of the greatest ceremonial sites in prehistoric Europe , the novel stone row could well be contemporary with the famous Stonehenge sarsen R-2 or even earlier . ”

Some of the stones would have stood up to 4.5 meters improbable .   Ludwig Boltzmann Institute .

The breakthrough was made as part of theStonehenge Hidden Landscapes Project , a five - year venture to enquire the area , and was announced at the British Science Festival in Bradford . The monument is thought to have been a ritual site , but the pit were by choice tip over before being incorporated into the bank . The pit are along the southern branch of a degree Celsius - shaped ritual natural enclosure , which faced towards the River Avon .

" We do n’t think there ’s anything quite like this anywhere else in the humanity , ” Gaffney toldBBC News . " This is completely newfangled and the scale is sinful . "

There are no   plans to excavate any of the Isidor Feinstein Stone at the moment , but archeologists have warned   that the proposedA303 tunnelunder Stonehenge could threaten undiscovered website like this .