In 2013 , twist crew in the city of Nevşehir , in the Cappadocia region of Turkey , were smash small - income lodging ring a tangled castle when they unearthed something astonishing : entrances to amassive undercover city .

Dating to at least Byzantine time , the huge internet of tunnels and way had been chip at into volcanic ash sway   called tuff that give Cappadocia — famed for its otherworldly “ queer houses , ” cave church , andevocative geological formations — its singular terrain .

It ’s not the first underground metropolis to be discovered in the region ; there are some 250 known subterranean dwelling house of various sizes hidden within the fantastical landscape . The two biggest are Kaymakli and Derinkuyu ; the latter is reckon to have been able to house up to 20,000 multitude . Both city have been screw for decennary .

Nevşehir Municipality

But this new underground town , hiding beneath a hundred - old castling on a hilltop right in Nevşehir , just might be the biggest . One early approximation by geophysicist put its area at nigh five million square feet and its depth at 371 metrical unit . If those idea are accurate , the metropolis may outsize Derinkuyu by a third .

In the preceding twelvemonth alone , archeologist have brought to daylight a huge multistory building complex with at least five levels . This largely ego - sustaining secret metropolis had everything from church building and workshops to bread and butter spaces and fresh water groove .

Before you read on , take a look at this ( dramatically scored ) aerial video to get a signified of the scale , fix , and sheer awesomeness of the site .

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Why was it construct ? For many 100 , such underground retreats were dependable havens for the region ’s inhabitants , who were early adopter of Christianity . ( The apostle Paul inspect in the first century CE , and by the 4th century its bishop were major power participant in the newly Christian Byzantine Empire . ) Moslem encroacher , Seljuk Turks , and Ottoman swayer all sweep through , with the Ottomans finally decree all of Anatolia — and far beyond .

The complexness , diversity , and size of the most recently discovered underground city is yet more evidence of how severely the locals took these invasion . The indweller could experience underground for some time if need be . They had fresh urine and approach to replenished supplies . To keep the outside globe out , all they had to do was roll heavy stone - disc doors across the tunnels to varnish themselves in .

FIVE LEVELS UNEARTHED IN THE PAST YEAR

Previous excavation revealed animation space , kitchens , wineries , chapels , staircase , and bezirhane — linseed presses for producing lamp rock oil to light the clandestine city — that were likely in use from the Byzantine geological era through the Ottoman conquering .

In the retiring year archaeologist have dig up five more levels , or terrace , of the city . This intensive excavation is help them to patch together how the monumental complex was organized and structure . “ Most of the areas that have been bring to daytime are plaza where people lived their day-to-day life story , ” archaeologist Murat Gülyaz , music director of the Nevşehir Museum , which oversees the excavation , tellsmental_floss .

On the upmost layer there are stone - cutting tombs , religious altars , short tunnels , computer memory depots , and a small-scale but spectacular Christian church . “ This terrace looks as if it was the location for religious activity , ” Gülyaz enounce . The church is partly caved in and is plagued by in high spirits humidness ; as a result , its frescos are peeling in places . Nevertheless , the unusual fresco , which include depictions of Christ ’s baptism , transfiguration , and crucifixion , are colorful and vibrant , if still partly obscured by earthly concern and stone .

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Gülyaz sound out the church building may go steady to the 12th or 13th 100 ( though other archaeologistsbelieveit could be older ) , stool it slightly young than the many other underground church in the region , which today can be chit-chat at places like theGoreme Open Air Museum .

This level has three separate air public discussion system , each one carefully designed for a specific want . One vent the suite for breathing air . Another serves as an exhaust system system for the furnaces . “ In the room with the throw away furnace , the air ventilating system funnels are made longer in social club to reach temperatures mellow enough to melt metallic element , ” Gülyaz says .

The 4th level is the main one , where most people would have exist sidereal day to Clarence Day . It ’s large , multipurposed , and settle at the very pith of the city . There are large horse barn , depots , workshop , and residence here . It was also the chief artery to the remote world . Cappadocians hold out underground would need admittance to the surface to maintain some contact with the outside world to replenish supplies .

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“ This terrace is like an entrance hall for visitors and local anaesthetic living inside , ” Gülyaz says . “ It ’s also the place where trade and logistical activity occurred … where outgoing caravans were institutionalise from and the incoming single were unloaded . ”

They also found a burrow nearly 2 feet wide and 6 metrical foot tall that has two entry peak , but because of a collapse in the burrow , they ’re not sure where it leads or what its purpose was . They distrust it was used for water transfer or conveyance .

dig on the fifth level only just began in January . Right now , the level is choked with land , debris , and litter left behind by advanced visitors , but the excavators are beginning to reveal the John Rock - cut room within . “ More cleanup oeuvre needs to be done before we can have an idea about this patio ’s function within the composite , ” Gülyaz say .

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CARVING OUT THE TRUTH

One puzzler archaeologists will endeavor to solve is how different sections of the city changed in design and routine over clip . Cappadocia ’s tuff rock is easy to chip at , but it ’s also wanton to alter , both by instinctive processes and the hands of people . While that ’s good news program for the Cappadocians who a thousand days ago carved underground refuge and today create hotels , shops , and eatery that draw millions of tourists , it gift a challenge for archaeologists trying to project out who did what when .

The view is especially complex in areas of the city that are close to the open ; over the century , these rooms were reused and sometimes reconfigured . “ These rock - contract places have been changed from their original functions . So their uses were transform over time consequently , " Gülyaz says . “ For exemplar , a way first carve to be used as a depot was later used as a seance way , a static , a bathroom , etc . Or a stone - disc door could later be used as a wall . ”

However , the deeper the researcher get into the complex body part , the more they find its original construction . “ We can tell the original functions of the internal office more precisely and can gather more meaningful information about their periods , ” Gülyaz says .

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The wintertime cold and snow have n’t stopped excavation ; the research worker have mostly just retreated to the interior . When the conditions warm up , they ’ll stay dig out out the secret city . Gülyaz articulate there are more tier to be turn up above , below , and beyond what has been found so far . There ’s still so much that ’s unknown about the city .

Here ’s one last look indoors , from October 2014 — long before the latest finds were made . The inside was terrific then , and it was only a fraction of what archaeologists can see now .

All image and video good manners of Nevşehir Municipality