The Algerian coast is rich in cultural heritage. Many major historical cities and archaeological remains are scattered along its coastline. This cultural heritage is increasingly threatened by the rapid urbanisation that Algeria has experienced in recent years. In 2018 the area of El Hamdania (Cherchell region) was selected as the site of a new commercial mega port. This large construction project will affect a number of archaeological sites located in this region. This paper aims to highlight the archaeological importance of the El Hamdania region and assesses the risks of such a construction to the heritage of the region. The archaeological evidence discussed is based on survey work carried out by members of the Laboratoire d’Études Historiques et Archéologiques (LEHA), an institution that carries out research projects on coastal and maritime archaeology in Algeria.