Chicxulub Crater

The Chicxulub Crater was located in the Yucatán peninsula in Mexico.

According to Sarah Jane Smith, it was the result of a meteor impact that caused the extinction of the dinosaurs. According to the Fourth Doctor, however, the crater was caused by a Drak colony ship. (PROSE: The Dragons of Prague)

References

While facing the Process, the Seventh Doctor recalled the tremendous impact created when "Adric hit Mexico," (PROSE: Cat's Cradle: Time's Crucible) suggesting that the Chicxulub crater was the result of the Briggs' freighter crash. (TV: Earthshock)