Originally Posted by EireEngineer
Then you must truely suck at using google. It took me all of five seconds to find a overhead view, and i will concede the point that it is a very rounded square. However, you have to realize that the impact is not the only force at work there. The sides of the crater have erroded and collapsed over time, giving it a slightly more square shape.
The next question is if its sides have eroded then why is the crater still so deep and its sides so precipitately steep?
And what is it about the soil/rock in the region that resistance to erosion is found in four directions?
Still an enigma for me.