ABSTRACT
Model localities of deep-seated slope failures in Tertiary volcanic rocks in the Bohemian Massif are characteristic of two different rock complexes: rigid and unconsolidated. Especially favourable conditions of deep failures appear in places where higher slope sections are built by rigid, brittle, and permeable material, and lower sections by rocks of plastic and low permeability character. Most frequently, a process of deep creep of rigid blocks on plastic bedrock develops. Examples are going to demonstrate individual genetic types of such slope failures.
