One of the few places on Earth where you can see a meteor impact crater (perhaps the object that hit was large enough to be considered a tiny asteroid) is Meteor Crater (aka Barringer Crater) in Arizona.
I used Google Streetview to show what it looks like while on approach to the crater (and I've seen this in person).
The interesting thing about this is, the terrain is flat enough and desert-enough to be very similar to Mars. And a crater rim on Mars looks very similar to a crater rim on Earth. Below is the rim of Endeavour Crater, as the Mars Opportunity Rover (which we hope to hear from again soon) first approached it, which is now several years ago.
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