re: Perhaps mud, bud.
Dirt doesn't just pack onto a surface in clumps like this unless it is moist neither does dust, as Nick noted.
Mud does. So does clay.
Bob Clark
Space/Science » in reply to re: Perhaps mud, bud.
Dirt doesn't just pack onto a surface in clumps like this unless it is moist neither does dust, as Nick noted.
Mud does. So does clay.
Bob Clark