Answer:
Put into a pit, locked beneath a grate, guarded through the night, yet it still goes out.
Three little letters, a paradox to some. The worse that it is, the better it becomes.
What gets closer when you blink?
My first is nothing but a nameอพ my second is more smallอพ my whole is of so little fame it has no name at all.
Mountains will crumble and temples will fall. And no man can survive its endless call.
I start with T end with T and within me is T.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?