Bombardment is ceretrainly still going on. One of the hugest collisions took place is what is now Germany. The crater is about 20 miles across. The road goes up over a rin several hundred feet high than then descend to a plain. Once upon a time, it will filled entirely by a lake and debris. I doubt one person in a thousand in Germany is even aware of the enormity of the event, even the thousans of school children who has visted the museum. After they have oooed and ahed, they go home and forget.
Ries Basin, a mere 15 million years ago I think. Next time one of those happens it may be with no warning, despite current efforts.