100 years later, Tunguska [explosion] still mysterious

Wilder theories have been bandied about over the years regarding what caused the Tunguska explosion, including:
…

  • A black hole zipping through Earth. This also does not account for mineral debris the explosion left behind, and there was no subsequent explosion as such a black hole, having tunneled through the Earth, would have shot back out through the surface of the Atlantic.
  • A Nikola Tesla “death ray.” The man who pioneered radio and modern alternating current electric power (AC) systems was often seen as a mad scientist. One story alleges he test-fired a death ray on the evening of June 30, 1908, and once he found out about the Tunguska event, he dismantled the weapon, deeming it too dangerous to remain in existence.

I’m having a tough time picking which I like better. Tesla is, of course, my first choice, but the idea of a black hole popping out of the Altantic is awesome, too.