And the biggest mystery of all: what exactly is it?

Trick or treat!

For you, Jay, I'll spoil the mystery.

Using the macro setting, I stuck my camera inside my jack-o-lantern and snapped a photo.

Appetizing, no?

Ah! A fungi pic! (I was guessing marble or lichens before I opened the comments)

Neat.

I'm afraid I was much more pedestrian today

;-)

Beautiful picture Darleen! Puts my Halloween fungus to shame.

I still can't believe you folks got 3 feet of snow.

I love both of those photographs. They complement each other.

It looks like a picture of Europe on fire!

Yes, it _does_!! And it lools like there's an even bigger fire in Russia or Asia. Looks like an asteroid hit the Earth.