largest lanslide in the world

Largest Landslide in the World

The Saidmareh Landslide in Iran moved about five cubic miles of material

  The largest landslide that has been identified on Earth's surface is the Saidmareh Landslide   located in western Iran. The slide occurred about 10,000 years ago when about 20 cubic   kilometers (about 5 cubic miles) of Lower Miocene and Eocene limestone detached along bedding   planes and slipped down the north flank of the Kabir Kuh anticline. The maximum vertical descent  was  about 1600 meters (5250 feet). 

    The sliding slab was about 15 kilometers (9 miles) wide and had a surface area of about 165   kilometers (64 square miles). Debris from the slide crossed the Karkheh River at the base of the slope   and spread across the valley floor. Some material in the slide had a travel distance of over   14 kilometers (9 miles).  

    The slide debris dammed the Karkheh River, causing a large lake to form behind the dam.  The lake persisted   long enough for up to 150 meters of sediment to accumulate on its bottom  (these sediments currently  support several thousand acres of cultivated land).  The lake then breached the dam and eroded a channel through it.