Babban kogo a duniya, Mammoth KOC a Kentucky, Amurka tana da tsawon fiye da kilomita 650.
Babban kogo a duniya, voro kogo a cikin caucasus, yana da zurfin fiye da mita 2,200.
Babban kogo a duniya dangane da ƙarar, Sarawak gidan a Malaysia, yana da yanki na kusan murabba'in kilomita 600,000.
Wasu kogunan suna da ƙwayoyin cuta da fungi waɗanda zasu iya samar da haske, don haka yana kama da taurari da sararin sama.
Kogewa na iya zama wuri don dabbobi da yawa, gami da jemagu, kifayen kifi, da kwari da ba a samo su ba a wani wuri.
Wasu kogo na daban-daban na lemun tsami, kamar su na stalactites (sifofin dutse da suke rataye daga rufin kogon) da stalagmites (tsarin dutse wanda ke girma daga kogo bene).
Wasu koguna suna da koguna na ƙasa waɗanda ke gudana cikin kogon.
Wasu kogunan suna ɗaukar wasu kogunan sun yi la'akari da bukatun yankin kuma ana amfani dasu don bukukuwan addini.
Wasu kogon suna kuma sanannun jan hankalin yawon shakatawa a duk duniya, saboda kyawun halitta da bambancin halitta na dutse yana da.
