Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Babbar kogin Gabon ita ce Ogooué wacce ke da nisan kilomita 1,200 (750 mi). Gabon tana da yankuna uku na karst inda akwai ɗaruruwan kogon da ke cikin dutsen dolomite da dutsen lemun tsami. Wasu daga cikin kogon sun hada da Grotte du Lastoursville, Grotte du Lebamba, Grotte du Bongolo, da kuma Grotte du Kessipougou. Ba a bincika koguna da yawa ba tukuna. Wani binciken National Geographic ya ziyarci kogon a lokacin rani na 2008 don yin rikodin su. Gabon kuma an san shi da kokarin kiyaye yanayin muhalli. A shekara ta 2002, Shugaba Omar Bongo Ondimba ya sanya kusan kashi 10% na yankin ƙasar don zama wani ɓangare na tsarin shakatawa na ƙasa (tare da wuraren shakatawa 13 gaba ɗaya), ɗayan mafi girman rabo na wuraren shakatawa na duniya. Hukumar Kula da Gidajen Kasa ta Kasa tana kula da tsarin gandun daji na Gabon.  Tambaya: Yaya tsawon kogin Ogooue?
1,200 kilomita (750 mi)