Iran is a very rugged country of plateaus and mountains, dominated by the Elburz Mountains in the north, and the Zagros Mountains along its western borders.
The central and eastern portion is covered by the Plateau of Iran. The Dasht-e Kavir is a sandstone and salty desert plateau, that in the heat of summer is one of the hottest places on the planet.
The most significant river is the Karun, in the southwestern corner of the country. Lake Urmia (in the far-northwest) is the country's largest body of water.
Iran's highest point, Mt. Damavand reaches 18,934 ft (5,771m).
Landscape of Iran Soroush90gh at en.wikipedia