Could it be the hole truth at last?

Italian scientists believe they've traced the origins of a Siberian lake to a 30'-diameter fragment of whatever caused the 1908 Tunguska blast. They plan on going back and checking the lake bottom for extraterrestrial sediments: I can only hope (for all our sakes) that they consult experts from Miskatonic University or at least have one team member whose eyes and mouth have been sewn shut, just in case.