Abstract: The present paper renders the results of a geomorphology research performed in North-Eastern Bulgaria. It focusses on the geomorphology and the main stages of evolution of the Beli Lom River. On the base of field research, geology and geophysics research, detailed analysis of the specialized literature, it is concluded that the formation of this impressing relict erosion relief can be explained only with the factor-geology time. It formed long before the limits of the Quaternary. The aim of the present paper is to draw scientists’ attention on the issues regarding the Pleistocene – Holocene paleoclimatic conditions and relief in North – East Bulgaria and South – East Romania so to clarify its evolution.

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