Ключевые слова: age, ancient, animal, archaeological, archaeologist, archaeology, background, bird, body, bone, bones, brown, brush, burial, dead, dig, dust, excavation, find, fossil, geological, ground, history, human, living, natural, neolithic, old, paleontology, person, pick, prehistoric, research, rock, ruins, sand, science, scientist, site, skeleton, skull, stone, tools, travel, trowel, underground, work, years,