Free colour textures: stones on the ground
Have some rocks. As always, click on the image for a full-size high-res version. First, a beautiful flat piece of sandstone from the beach at Amble (and second, the other side of the same piece): And thirdly, the beach at Druridge Bay has trails of glittering black swirled into the yellow sand, from smashed seacoal.
Free colour textures - stones on the ground