The aim of this paper is to examine the relevance of Heidegger’s characterization of the devastation of the earth as a hermeneutical key in order to understand the course of our present historical marked by war, desolation and the systematic extermination of all life. Following Heidegger’s indications of the devastation caused by the war, we propose to examine its increase as the banishment of Mnemosyne that not only freezes the soul, but above all disarms the spirits to stand up to their pain. Thus we want to establish a dialogue between Heidegger and Hans Blumenberg around end of time, for both philosophers the devastation of the world of life necessarily involves the return of the forgotten.