Amazon River
Nile River
Niger River
Tiber River
Ganges River
Yellow River/Huang He
Yangtze River
Indus River
Tigris River
Euphrates River
Rio Grande
Mississippi River
Saharah Desert
Gobi Desert
Kalahari Desert
Namib Desert
Mojave Desert
Arabian Desert
Atacama Desert
Hindu Kush
Himalayan Mountains
Alps (Mountains)
Pyrenees Mountains
Andes Mountains
Caucasus Mountains
Ural Mountains