This Cassini image of Phoebe begins to tell a tale... quite a number of tales, actually.
Phoebe’s entire surface is pretty much cratered-up like this, with lighter/brighter new craters (as shown near the centre of this shot) possibly hinting at a reworked thin dark rock layer over an icy surface.
Phoebe has evidently not had a gentle life, not been a safe little 20km-wide rock to hibernate on while the rest of the Solar System got along with things at it own pace. It even has a whacking great ding on its head-end, kinda like the surface-blasting on Ganymede only less electric looking.
Krakatoas, tsunamis & all, Earth is still a relatively gentle place to be.