Kogunan Abanda sune hadaddun kogo a Gabon, waɗanda suke a gefen hawan Fernan Vaz Lagoon. Dr Marco Marti da Claude Werotte ne suka fara bincika su a farkon shekarun 2000. Akwai hanyoyin sadarwa guda biyu masu zaman kansu: kogon Dinguembou (350m) da kogon Mugumbi (400m). Samun dama ga hanyoyin kwance yana yiwuwa ta madaidaiciyar shafts na mai girma 7m zurfin. Suna karɓar bakuncin manyan yankuna na jemagu (bata fruitan itace na Egyptianasar Masar, dean zagaye na Sundevall, antan Giant roundleaf) wanda aka kiyasta sama da mutane 100,000. An lura da gidajen Picathartes a ƙofar kogon. Koguna Abanda sananne ne don karɓar bakuncin ɗimbin ɗumbin bishiyoyi masu launin ruwan lemo mazaunin dwar daddawa. Masanin ilimin herpeto Matthew H. Shirley ne ya fara bayyana su bayan balaguron kimiyya na farko a cikin kogo a cikin 2010. Wadannan kada suna rayuwa ne a cikin duhun gaske, suna ciyarwa galibi akan jemage da kunkurucin kogo kuma suna iyo a cikin ruwa mai guano. "Abanda expedition official website". Testa, Olivier; Oslisly, Richard; Sebag, David; Shirley, Matthew; Decaëns, Thibaud (2011-12-01). "Crocodiles des cavernes !". Spelunca. pp.