I know that it's mentioned in the 'Generally just fucking creepy-stuff thread,' but there's really not much discussion on it, and I feel like it needs more discussion.
Read the top one first.
This is the story of a man named Ted and his friend to is referred to as 'B' as they explore a cave he calls 'Mystery Cave.' There is a small hole down in, about 3 inches wide. They widen it through means of cordless drill, then Ted goes inside. They have many strange experiences throughout their journey, and it scared the living shit out of both of them. A great read, in my opinion.
This is the full story, no censors or anything, and it actually ENDS!