Lava flows are sometimes associated with these eruptions. Cinder cones tend to have steep sides and as one could expect from their name are cone-like. A good example of a cinder cone is Mt. Capulin in NE New Mexico. The prevailing wind at the time of the eruption affects the symmetry of the cone. Cinder cones can form quite rapidly, i.e., on the order of months to several years.
Impact craters are readily visible on the moon's surface.
A different type of impact crater is easily visible in Vietnam. In this case, they are smaller in size and are not from the result of meteor impacts but were caused by extensive aerial bombardment by B-52 bombers during the Vietnam War. In areas of high evaporation, salts are left behind and form a dry flat lake bed. Great Salt Lake is an example. The Texas Panhandle has thousands of playa lakes, although they formed by a different processes, perhaps the dissolution of rock below the surface, and are smaller, they nonetheless have the same characteristic shape.