[seanhunter]

The article says:

  > The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico.

So I guess plate techtonics have caused things to shift around such that the crater isn't a hole in the surface now, but is underneath other rock?

[ppsreejith]

Fun fact: If you google "Chicxulub crater" you see an animation of an asteroid crashing.