on the ground!
Impact craters occur where objects impact on a solid surface.
For immediate impact, probably nuclear. For total impact, probably biological.
There are 3 collisions that occur when a vehicle hits a solid object; the initial impact, the passenger impact on restraints or parts of the vehicle, passengers suffering internal collisions with organs
Probably another planet that was there, but got smashed up by impact
BIOLOGICAL
BIOLOGICAL
BIOLOGICAL
tectonic plates
Significant impact to the head and rapid acceleration/deceleration of the head
Experts anticipate that biological terrorist attacks are the most likely to occur, and will have the greatest impact on the greatest number of people.
biological
Stress fracture