Plato, 101 km in diameter, is the prominent lava filled crater just right of center. Note the several craterlets on the otherwise flat floor. Only 5 are visible here (plus one more on the original - and yes we lunar imaging nerds do count how many we can resolve), but larger scopes reveal many more in times of good seeing conditions. These craterlets are in the range of 1.75 to 2 or so kilometers in diameter.