A cikin 1900, kusa da tsohuwar birnin Byzantine na Theodosia, Zibold wanda ya kasance masanin gandun daji da injiniya wanda ke kula da wannan yanki, ya gano manyan duwatsu guda goma sha uku a kowace rana. Kowane dutsen dutse ya rufe sama da mita 900 (9,700 sq ft) kuma yana da kimanin mita 10 (33 ft) tsayi. Abubuwan da aka gano sun kasance tare da ragowar 75-millimeters diamita (3.0 in) bututun terracotta wanda ya kai ga rijiyoyi da maɓuɓɓugan ruwa a cikin birni. Zibold ya kammala cewa tarin duwatsu masu ƙwanƙwasawa ne waɗanda ke ba Theodosia ruwa; kuma ya ƙididdige cewa kowane iska yana samar da fiye da lita 55,400 (12,200; 14,600 US gal) kowace rana. Don tabbatar da zatonsa Zibold ya gina dutsen dutse mai yawa a tsawon mita 288 (945 ft) a kan Tebaba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba-ba.
Shekara ta 1915