Gabon tana da yankuna uku na karst inda akwai ɗaruruwan koguna da ke cikin dutsen dolomite da dutsen lemun tsami. Wasu daga cikin kogunan sun haɗa da Grotte du Lastoursville, Grotte du Lebamba, Grotte du Bongolo, da Grotte du Kessipougou. Ba a bincika koguna da yawa ba tukuna. Wani Tafiya na National Geographic ya ziyarci kogunan 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 Ondimba Bongo ya sanya kusan kashi 10% na ƙasar don zama wani ɓangare na tsarin shakatawa na ƙasa (tare da wuraren shakatawa 13), ɗaya daga cikin mafi girman rabo na wuraren shakatawa na ƙasa a duniya. Hukumar Kula da Gidajen Kasa ta Gabon tana gudanar da tsarin kogin Ogooue. Tambaya: Yaya tsawon kogin Ogooue?
1,200 kilomita (750 mi)