U.CNYU canyon

a relatively narrow, deep depression with steep sides, the bottom of which generally has a continuous slope

25 features in 7 countries.

#CountryFeaturesShare of the world
1AntarcticaAQ14
2Papua New GuineaPG5
3United StatesUS2
4AustraliaAU1
5Ivory CoastCI1
6FranceFR1
7Sri LankaLK1
Total25