 Many relics related to the themes of the rock art were found at Neolithic sites, include deer pattern pottery, net pattern pottery and shell mask discovered in the Dongsam-dong Shell Midden in Busan, a figure with human faces in Osan-ri in Yangyang, a small clay wild pig excavated from the shell midden on Yokjido island of Tongyeong, the clay figure of a woman in Sinam-ri in Ulsan, and a small clay seal excavated from the shell midden in Sejuk-ri, Ulsan.Furthermore, a boat was excavated from the shell midden in Bibong-ri, Changnyeong, and during the Hwangseong-dong site excavation research project conducted by the Korea Archaeology and Art History Research Institute a whale bone stuck with a harpoon was found, which empirically proves whaling.The layers which contain the bones of captured whales date back to 5500 to 4700 BP.