Greenland
lowest point: Atlantic Ocean 0 m
highest point: Gunnbjorn 3,700 m
Grenada
lowest point: Caribbean Sea 0 m
highest point: Mount Saint Catherine 840 m
Guam
lowest point: Pacific Ocean 0 m
highest point: Mount Lamlam 406 m
Guatemala
lowest point: Pacific Ocean 0 m
highest point: Volcan Tajumulco 4,211 m
Guernsey
lowest point: Atlantic Ocean 0 m
highest point: unnamed location on Sark 114 m
Guinea
lowest point: Atlantic Ocean 0 m
highest point: Mont Nimba 1,752 m
Guinea-Bissau
lowest point: Atlantic Ocean 0 m
highest point: unnamed location in the northeast corner of the
country 300 m
Guyana
lowest point: Atlantic Ocean 0 m
highest point: Mount Roraima 2,835 m
Haiti
lowest point: Caribbean Sea 0 m
highest point: Chaine de la Selle 2,680 m
Heard Island and McDonald Islands
lowest point: Indian Ocean 0 m
highest point: Mawson Peak, on Big Ben volcano 2,745 m