Chicxulub Crater
From Tardis Wiki, the free Doctor Who reference
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)