Cape Verde
lowest point: Atlantic Ocean 0 m
highest point: Mt. Fogo 2,829 m (a volcano on Fogo Island)
Cayman Islands
lowest point: Caribbean Sea 0 m
highest point: The Bluff (Cayman Brac) 43 m
Central African Republic
lowest point: Oubangui River 335 m
highest point: Mont Ngaoui 1,420 m
Chad
lowest point: Djourab Depression 160 m
highest point: Emi Koussi 3,415 m
Chile
lowest point: Pacific Ocean 0 m
highest point: Nevado Ojos del Salado 6,880 m
China
lowest point: Turpan Pendi -154 m
highest point: Mount Everest 8,850 m
Christmas Island
lowest point: Indian Ocean 0 m
highest point: Murray Hill 361 m
Clipperton Island
lowest point: Pacific Ocean 0 m
highest point: Rocher Clipperton 29 m
Cocos (Keeling) Islands
lowest point: Indian Ocean 0 m
highest point: unnamed location 5 m
Colombia
lowest point: Pacific Ocean 0 m
highest point: Pico Cristobal Colon 5,775 m
note: nearby Pico Simon Bolivar also has the same elevation