In the text below, who is the person that discovered the underground city?

Those are all fictional examples. But in 1963, that barrier was breached for real. Taking a sledgehammer to a wall in his basement, a man in the Turkish town of Derinkuyu got more home improvement than he bargained for. Behind the wall, he found a tunnel. And that led to more tunnels, eventually connecting a multitude of halls and chambers. It was a huge underground complex, abandoned by its inhabitants and undiscovered until that fateful swing of the hammer.

The anonymous Turk—no report mentions his name—had found a vast subterranean city, up to 18 stories and 280 feet (76 meters) deep and large enough to house 20,000 people. Who built it, and why? When was it abandoned, and by whom? History and geology provide some answers.

A hot air balloon with the Turkish flag sails past fairy chimneys, a rock formation typical for Cappadocia. 
A hot air balloon with the Turkish flag sails past fairy chimneys, a rock formation typical for Cappadocia. MURAT ASIL / ANADOLU AGENCY / GETTY IMAGES
Fantastically Craggy Cappadocia
Geology first. Derinkuyu is located in Cappadocia, a region in the Turkish heartland famed for the fantastic cragginess of its landscape, which is dotted with so-called fairy chimneys. Those tall stone towers are the result of the erosion of a rock type known as tuff. Created out of volcanic ash and covering much of the region, that stone, despite its name, is not so tough.

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Taking a cue from the wind and rain, the locals for millennia have dug their own holes in the soft stone for underground dwellings, storage rooms, temples, and refuges. Cappadocia numbers hundreds of subterranean dwellings, with about 40 consisting of at least two levels. None is as large, or by now as famous, as Derinkuyu.
system
neeche die gaye paath main, vah vyakti koun he jisane bhumigat shahar kii khoj kii he?

ve sabhi kaalpanik udhaaharan hai.lekin 1963 main, us baadha ko vaastavik ke liye bhang kar diya gaya tha.apane tahkhaane main ek diwaar ke liye ek sledhaimar ko lete hue, turki shahar derinkuu main ek vyakti ko isse adhik ghar main sudhaar mila.diwaar ke peeche, use ek surang mili.or isse adhik surangen huin, antat haul or kakshon kii ek bheed ko joda gaya.yah ek vishaal bhumigat parisar tha, jise iske nivaasiyon dwaara chhod diya gaya tha or hathaudaa ke us bhayaavah swing tak andekha kar diya gaya tha.

anaam turk- koi report main unke naam kaa ullekh nahin he - ek vishaal bhumigat shahar paaya gaya tha, 18 kahaniyon or 280 feet (76 meter) tak gahari or 20,000 logon ke liye paryaapt rup se ghar ke liye paryaapt he.ise kisne banaaya, or kyon?ise kab chhod diya gaya tha, or kiske dwaara?itihaas or bhuvigyaan kuch uttar pradaan karte hai.

turki ke jhande ke saath ek garm hawa kaa gubbaaraa, feiri chimney ke pichley bhaag jaataa he, ek rock formation cappadosia ke liye vishisht he.
turki ke jhande ke saath ek garm hawa kaa gubbaaraa, feiri chimney ke pichley bhaag jaataa he, ek rock formation cappadosia ke liye vishisht he.murat asil / anadolu agency / geti imagej
kaalpanik rup se craigi cappadosia
bhuvigyaan pehle.Derinkuyu, Cappadocia main sthit he, turki ke dil ke maidan main ek kshetra he jo apane paridrishy kii shandaar cragginess ke liye prasiddh he, jo tathakthith pari chimney ke saath bindidaar he.un lambey pathar ke towers ek rock prakaar ke kataav kaa parinaam hai jinhen taff ke rup main janaa jaataa he.jwalamukhi kii raakh se baahar banaaya gaya or is kshetra ke adhikansh hisse ko cover karnaa, vah pathar, iske naam ke baavjood, itnaa kathin nahin he.

gastro obscura book
duniya kaa swaad!
paak duniya ke itihaas, samskruti or sthanon ke madhyam se ek aankh kholane vaali yatra.
ab order den
gastro obscura book

hawa or barish se ek kyuu lete hue, sahasrabdi ke liye sthaneey logon ne bhumigat awaason, bhandaaran kamare, mandiron or rifus ke liye naram pathar main apane swayan ke chhed khode hai.Cappadocia kii sankhya saikadon sabatrinian awaason ke saath he, jisamen lagbhag 40 kam se kam do staron se milakar hote hai.koi bhi utana bada nahin he, yaa ab tak ke rup main prasiddh, derinkuu ke rup main.
user
khoj karne vaale vyakti kaa naam bataaya gaya tha.
assistant
<|system|>
</s>
<|user|>
neeche die gaye paath main, vah vyakti koun he jisane bhumigat shahar kii khoj kii he?

ve sabhi kaalpanik udhaaharan hai.lekin 1963 main, us baadha ko vaastavik ke liye bhang kar diya gaya tha.apane tahkhaane main ek diwaar ke liye ek sledhaimar ko lete hue, turki shahar derinkuu main ek vyakti ko isse adhik ghar main sudhaar mila.diwaar ke peeche, use ek surang mili.or isse adhik surangen huin, antat haul or kakshon kii ek bheed ko joda gaya.yah ek vishaal bhumigat parisar tha, jise iske nivaasiyon dwaara chhod diya gaya tha or hathaudaa ke us bhayaavah swing tak andekha kar diya gaya tha.

anaam turk- koi report main unke naam kaa ullekh nahin he - ek vishaal bhumigat shahar paaya gaya tha, 18 kahaniyon or 280 feet (76 meter) tak gahari or 20,000 logon ke liye paryaapt rup se ghar ke liye paryaapt he.ise kisne banaaya, or kyon?ise kab chhod diya gaya tha, or kiske dwaara?itihaas or bhuvigyaan kuch uttar pradaan karte hai.

turki ke jhande ke saath ek garm hawa kaa gubbaaraa, feiri chimney ke pichley bhaag jaataa he, ek rock formation cappadosia ke liye vishisht he.
turki ke jhande ke saath ek garm hawa kaa gubbaaraa, feiri chimney ke pichley bhaag jaataa he, ek rock formation cappadosia ke liye vishisht he.murat asil / anadolu agency / geti imagej
kaalpanik rup se craigi cappadosia
bhuvigyaan pehle.Derinkuyu, Cappadocia main sthit he, turki ke dil ke maidan main ek kshetra he jo apane paridrishy kii shandaar cragginess ke liye prasiddh he, jo tathakthith pari chimney ke saath bindidaar he.un lambey pathar ke towers ek rock prakaar ke kataav kaa parinaam hai jinhen taff ke rup main janaa jaataa he.jwalamukhi kii raakh se baahar banaaya gaya or is kshetra ke adhikansh hisse ko cover karnaa, vah pathar, iske naam ke baavjood, itnaa kathin nahin he.

gastro obscura book
duniya kaa swaad!
paak duniya ke itihaas, samskruti or sthanon ke madhyam se ek aankh kholane vaali yatra.
ab order den
gastro obscura book

hawa or barish se ek kyuu lete hue, sahasrabdi ke liye sthaneey logon ne bhumigat awaason, bhandaaran kamare, mandiron or rifus ke liye naram pathar main apane swayan ke chhed khode hai.Cappadocia kii sankhya saikadon sabatrinian awaason ke saath he, jisamen lagbhag 40 kam se kam do staron se milakar hote hai.koi bhi utana bada nahin he, yaa ab tak ke rup main prasiddh, derinkuu ke rup main.</s>
<|assistant|>
khoj karne vaale vyakti kaa naam bataaya gaya tha.</s>
