One thing that should really tip you off about why they are more heavily cratered is that they are occuring on what would be the Moon's magnetic north and south pole. Some people think that this might have something to do with what happened to Mars.
Look at how the south pole is heavily cratered, and above the average elevation of the planet. The north pole, on the other hand, is 3000 feet below average and is remarkably smooth. Note the 4 large "volcanoes" and the super-grand canyon called the Valles Marineris directly to the right. Awfully suspiscious, right?
You noticed something that most people haven't or probably ever will, Pumpkin Pie, but let's review a few things about the Moon that are FACT, and then I'll ask you what you think about this little theory I got running through my brain.
This is a picture of what is certainly the most conspicuous crater on the Moon: Tycho. Located in the southern hemisphere, the crater is some 85 kilometers in diameter with “rays” that extend at least a quarter of the way around the moon.
Lightning on a golf course
The central peak, said to have been formed by a “rebound” of subterranean material, rises about 2 kilometers above the crater floor. Planetary scientists suggest that the flat floor of the crater was formed by the pooling of melted material.
But the idea that an impact would create such an extensive pool of molten rock finds no support in impact experiments or in high-energy explosions. Not even an atomic explosion creates a flat melted floor of this sort. The force of the explosion shocks and ejects material. It does not hold the material in place to “melt” it into a lake of lava.
On the left is Aristarchus, while on the right is Herodotus, which punctuates Schroeter's Valley.
Where it is.
The crater Aristarchus, pictured above, stands out in all Earth-based telescopic images of the Moon. Of the larger formations on the Moon, this rayed crater is considered the brightest. Notice the striking similarities to the golf course.
Electric craters in the lab
The centers of some of the craters have bumps, as do many craters on the Moon, Mars, and other surfaces.
Electric "wind" in the lab: before
Quite possibly the same effect on Mars. The current was much stronger so the ground got much hotter.
Finally look at this last rille on the Moon, with it having blast away the surrounding surface material.
Anyways, what I'm getting at is that for every North and South magnetic pole, there's an electric current associated with it. These currents come in from outside our solar system, and when they fluctuate greatly or another moving body discharges with another, great lightning storms take place... just like our ancient ancestors said they did. Somewhere down the line we got to thinking that were smarter than them, but we ignore the simple things in front of our faces.
Aurora's on our magnetic poles whenever the solar "wind" (or charged current, according to this theory) blows. Magnetic fields everywhere we look in the Universe, shaping galaxies and star systems. Stars orbiting each other in a matter of hours, defying gravity to the max. Sunspots show us the interior of the Sun, which is cooler than the surface, which is even cooler than the corona; completely the opposite of the fusion model.
Venus' orbit is nearly a perfect circle, has some missing arc seconds, and rotates/orbits the opposite direction of most planets. Some of its ancient names (translated) were the bearded planet, the smoky planet, the hairy planet. Its Latin name meant morning star. This thing was literally glowing back in the day. It has a pretty much brand new surface, and some data suggest that it's actually cooling off. SOHO has detected stringy filaments eminating from the planet.
The filaments on Sun's surface seem to be massive tornadoes that are running parallel to the surface of the Sun:
More twists and hairs. Note the dark stripes down the back of the filaments.
Compare them to this fire tube demonstration, with the dark stripe being the central vortex.
The path of the currents.
So, dang that was a long post. Nuff said.