One of the first changes among Slavs, which spanned jointly with the acceptance of Christianity during thee centuries, were burial customs. In the 9th and 10th century, the predominant type of burial sites became the "cemeteries with burial in row" ("groblje na redove"). Christian influences included burying of the bodies in the stretched position, with or without a casket, with the head in the west direction, but the graves contained pottery vessels and other burial objects, remnants of the pre-Christian customs. In time, the latter became less and less present. In the mountainous and hilly areas, the cemeteries were usually located on hillocks or elevations (Mihaljevići, near Sarajevo), in lowlands they were built in the valley bottoms (Mahovljani, near Banja Luka; Petoševci, near Laktaši), while some were located in the ruins from the Late Antiquity (Cim, near Mostar; Višići).