Volcanoes, Waterfalls, Desserts &Islands: No.VolcanoeHeight 01Gaullatiri (Chile)19882 ft. 02Laskar (Chile)19652 ft. 03Cotopaxi (Equador)19347 ft. 04Tupungatito (Chile)18504 ft. 05Popocatepeti (Mexico)17887 ft. 06Sangay (Equador)17159 ft. No.WaterfallFeet 01Angel (Venezuela)2648 02Ribbon(California,USA)1612 03King George VI(Guyana)1600 04Upper Yosemite (California)1430 05Gavarnie (Pyrenees,France)1385 06Tugela(Natal,S.Africa)1350 No.Desert sq.miles 01Sahara (N.Africa)3500000 02Libya (N.Africa)650000 03Great Australian (W.Australia)600000 04Arabian (Arabia)500000 05Gobi (Mongolia)400000 06Kalahari (Botswana)200000 No.IslandOcean sq.miles 01GreenlandArctic840000 02New GuineaPacific347450 03BorneoPacific307000 04BaffinArctic236000 05MadagaskarIndian227737 06SumatraIndian161102