the deepest crater on the moon is Newton at 29,000 feet or 8,839 meters from the peak to the floor. This is not a shallow crater. The moons diameter
is also only 2180 miles so it's not super huge about 1/4 the size of the Earth.
This is a pic of the newton crater
[img]http://www.sibology.com/90MCR01.JPG[img/]
and this one below is another crater
Now here is one on Earth
They look pretty similar after millions or billions of years. If you were to take away Earths oceans we would have a similar landscape to that of the
moon.