A creep is a slow downward progression of rock and soil on a slope of terrain.
A rockfall is a mass of loose rocks that fall down a slope.
A landslide is a mass of earth and/or rocks that have collapsed from a mountain or cliff.
A mudflow is an avalanche of big amounts mud.
"Cordilleras" <span>are parallel sets of mountain ranges within the Andes Mountains. A cordillera is a chain of mountain ranges - and it is an extensive chain. The term itself originates from Spanish that has the same meaning. It is applied to different ranges that includes the Andes of South America but seldom on other mountain ranges in the ridge.</span>
