Gangar Tsaro ta Gwollu wata katanga ce mai tarihi a yankin Upper West na Ghana. Ganuwar tana kusa da iyakar Burkina Faso da Mali. An gina shi a matsayin kariya daga masu fataucin bayi. Gwollu Koro Limann ne ya gina katangar Gwollu a karni na 19. Ganuwar tana daya daga cikin abubuwan da aka sani na cinikin bayi. Yankin ya sha fama da hare -haren tashin hankali wanda jagororin Babatu da Samori ke jagoranta. Don hana waɗannan hare -hare, an gina bango biyu. Wasaya shine don kare gidaje a cikin al'umma, yayin da ɗayan kewaya gonaki da gawarwakin ruwa. An yi imanin cewa ginin ya ɗauki kimanin shekaru 10 zuwa 25 kowannensu, amma ba a kammala ba. An yi watsi da katangar lokacin da aka soke cinikin bayi na Atlantika, duk da cewa har yanzu masu cinikin bayi na cikin matsala. Yankin da ke kewaye da Gwollu ne kawai ya rage. "Gwollu Slave Trade Defence Wall". ghana.peacefmonline.com. Retrieved 11 August 2020. "Gwollu Slave Trade Defence Wall". Ghana-Net.com (in Turanci). Retrieved 11 August 2020. "Gwollu Slave Defense Wall". The Hauns in Africa (in Turanci).