Public domain photos

The image shows a piece of rock on a white background with a scale on the right side and text at the bottom. The rock appears to be a flint, with a rough, uneven surface and a distinct pattern of small, jagged edges.

The image shows a piece of rock on a white background with a scale on the right side and text at the bottom. The rock appears to be a flint, with a rough, uneven surface and a distinct pattern of small, jagged edges.Open in library