4. A small stone artifact, probably an arrowhead, with a blunt straight edge and a sharpened, crescent-shaped back, especially characteristic of the Mesolithic Age.

• 新月形石器一个小的石制的人工制造物，可能是个箭头，有钝的直边，尖的新月形背部，尤其是有中石器时代特点的收藏指正