The region of Edessa is free from the usual erosion factors of urban areas,but another uncontrollable action of nature causes an intense problem and sets limitations to archaeological knowledge, especially in such a important Macedonian town.

The problem, roughly described, is created by the sediment crust which covers movable and unmovable archaeological finds and thus restricts their historical, stylistic, morphological and chronological study as well as their proper exhibition in museums and other relevant institutions.