Cocos (Keeling) Islands:
flat, low-lying coral atolls
Colombia:
flat coastal lowlands, central highlands, high Andes
Mountains, eastern lowland plains
Comoros:
volcanic islands, interiors vary from steep mountains to
low hills
Congo, Democratic Republic of the:
vast central basin is a low-lying
plateau; mountains in east
Congo, Republic of the:
coastal plain, southern basin, central
plateau, northern basin
Cook Islands:
low coral atolls in north; volcanic, hilly islands in
south
Coral Sea Islands:
sand and coral reefs and islands (or cays)
Costa Rica:
coastal plains separated by rugged mountains
Cote d'Ivoire:
mostly flat to undulating plains; mountains in
northwest
Croatia:
geographically diverse; flat plains along Hungarian border,
low mountains and highlands near Adriatic coastline and islands