Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A cikin 1900, kusa da tsohuwar garin Byzantine na Theodosia, manyan duwatsu goma sha uku da aka gano ta hanyar Zibold wanda ya kasance mai kula da gandun daji da injiniya wanda ke kula da wannan yanki. Kowane tarin dutse ya rufe sama da murabba'in mita 900 (9,700 sq ft) kuma ya kai kimanin mita 10 (33 ft). Abubuwan da aka gano sun kasance tare da ragowar bututun terracotta mai diamita na milimita 75 wanda a bayyane yake ya kai ga rijiyoyi da maɓuɓɓugan ruwa a cikin birni. Zibold ya kammala cewa tarin duwatsun sun kasance condensers wadanda suka samar da Theodosia da ruwa; kuma ya kirga cewa kowane rijiyar iska ta samar da fiye da lita 55,400 (12,200 imp gal; 14,600 US gal) kowace rana. Don tabbatar da zatonsa Zibold ya gina dutsen dutsen dutse a tsawo na mita 288 (945 ft) a kan dutsen Tepe-Oba kusa da tsohuwar Theodosia. Zibold ta condenser aka kewaye da wani bango 1 mita (3 ft 3 in) high, 20 mita (66 ft) m, a kusa da wani kwano-dimbin yawa tarin yankin da magudanun ruwa. Ya yi amfani da duwatsun teku 10<unk>40 santimita (3.9<unk>15.7 in) a diamita da aka ɗora mita 6 (20 ft) a cikin wani katako wanda ya kai mita 8 (26 ft) a diamita a saman. Siffar dutsen dutse ya ba da izinin iska mai kyau tare da ƙarancin hulɗar zafi tsakanin duwatsun.Zibold's condenser ya fara aiki a 1912 tare da matsakaicin samarwa na yau da kullun wanda daga baya aka kiyasta ya zama lita 360 (79 imp gal; 95 US gal) <unk> Zibold bai yi rajistar jama'a ba sakamakon sa a lokacin. Tushen ya sami kwararar ruwa wanda ya tilasta gwajin ya ƙare a cikin 1915 kuma an rushe shafin kafin a watsar da shi. (An sake gano wurin a shekara ta 1993 kuma aka tsabtace shi.) Zibold's condenser ya kasance kusan girman girman dutse na dutse da aka samo, kuma kodayake yawan amfanin ƙasa ya fi ƙasa da yawan amfanin ƙasa da Zibold ya ƙididdige don tsarin asali, gwajin ya kasance wahayi ga masu ci gaba na gaba.  Tambaya: A wace shekara aka dakatar da gwajin?
Shekara ta 1915