The prevailing theory is that a comet exploded before impact with ~10-20 megatons explosive power (all kinetic energy converted to heat plus the bit of methane ice which oxidized). Because of that there is no crater. Just a lot of trees knocked down which have been slowly rotting for 100 years. Probably even those trees are hard to see because succession vegetation has taken over (brush, alders, birch).
If you want to see a spectacular recent impact crater go to Meteor Crater in Arizona, Wolfe Creek in NT, Australia or Guelb Richat in Mauritania.
Unimog U500 w/Unicat
Last edited by m37charlie; 9 Apr 2008 at 04:38.