Tsibiran da suka ɓace sun daɗe suna ɗokin mafarkin ma’aikatan jirgin ruwa. Shekaru aru-aru, ana musayar tatsuniyoyi na waɗannan ƙasashe da suka ɓace cikin sautin murya, har ma a cikin da'irar kimiyya masu daraja.
A kan tsoffin taswirorin ruwa, mun sami tarin tsibiran da ba a tsara su ba: Antilia, St. Brendan, Hy-Brazil, Frisland, da Tsibiri mai ban mamaki na Biranen Bakwai. Kowa yana riƙe da labari mai jan hankali.
Labari ya faɗi game da bishop Katolika guda bakwai, wanda Archbishop na Oporto ya jagoranta, waɗanda suka guje wa yaƙin da Moorish suka yi wa Spain da Portugal a AD 711. Da suka ƙi ba da kai ga waɗanda suka ci nasara da su, suka jagoranci wata ƙungiya zuwa yamma a kan tarin jiragen ruwa. Labarin ya nuna cewa bayan tafiya mai haɗari, sun sauka a kan wani tsibiri mai ban sha'awa, mai fa'ida, inda suka gina birane bakwai, wanda ke nuna sabon gidansu har abada.
Daga yadda aka gano shi, Tsibiri na Biranen Bakwai ya ɓoye a ɓoye. Ƙarnukan da suka biyo baya sun ga mutane da yawa suna watsi da shi a matsayin fatalwa kawai. Amma duk da haka, a cikin karni na 12, mashahurin masanin ƙasa na Larabawa Idrisi ya haɗa wani tsibiri mai suna Bahela akan taswirorinsa, yana alfahari da manyan birane bakwai a cikin Tekun Atlantika.
Koyaya, Bahelia ita ma ta ɓace daga gani, ba a ambata ba har ƙarni na 14 da 15. A lokacin ne taswirorin Italiya da Spain suka nuna sabon tsibirin Atlantic - Antilles. Wannan sake fasalin ya gudanar da birane bakwai masu sunaye na musamman kamar Azai da Ari. A cikin 1474, Sarkin Portugal Alfonso V na Portugal har ma ya ba Kyaftin F. Teles umurnin ya bincika kuma ya yi da'awar "Biranen Bakwai da sauran tsibirai a Tekun Atlantika, arewacin Guinea!"
Ba za a iya musantawa da sha'awar Biranen Bakwai a cikin waɗannan shekaru. Matukin jirgin ruwa na Flemish Ferdinand Dulmus ya roki sarkin Portugal ya ba shi izinin neman tsibirin a shekara ta 1486, idan ya same shi. Hakazalika, jakadan Spain a Ingila, Pedro Ahal, ya ba da rahoto a cikin 1498 cewa ma'aikatan jirgin ruwa na Bristol sun kaddamar da balaguron balaguro da yawa don neman manyan biranen Bakwai da Frisland.
Alamar ruɗani ta taso tsakanin Tsibirin Biranen Bakwai da Antillia. Masana ilimin ƙasa na Turai sun yi imani da wanzuwar Antillia. Martin Behaim sanannen 1492 na duniya ya sanya shi a cikin Tekun Atlantika, har ma da'awar wani jirgin ruwa na Spain ya isa gaci a cikin 1414!
Antillia ta ci gaba da bayyana akan taswirori a cikin ƙarni na 15. Musamman ma, a cikin wasiƙar 1480 zuwa ga Sarki Alfonso V, Christopher Columbus da kansa ya ambace ta da kalmomin "tsibirin Antillia, wanda kuma aka sani gare ku". Har ma sarkin ya ba da shawarar Antillia a gare shi "a matsayin wuri mai kyau inda zai tsaya a kan tafiyarsa da ƙasa a bakin teku".
Ko da yake Columbus bai taɓa kafa ƙafar Antillia ba, tsibirin fatalwa ya ba da sunansa ga sabbin yankuna da ya gano - Antilles mafi girma da ƙananan. Tsibirin Biranen Bakwai, fitilar asirta na tsawon shekaru aru-aru, yana ci gaba da hasarar tunaninmu, saura ne daga dawwamammiyar ikon sha'awar ɗan adam da sha'awar abin da ba a sani ba.
