According to the Psalmist, King David, we were curiously wrought in the lowest parts of the Earth. A gravitational singularity to be precise. Here's another thought in the form of a deductive question:
When is the Soul?
The Angel of the Bottomless Pit
Something that doesn't get discussed very often is this terrifying description of horse-sized armor-plated locusts with scorpion tails that are going to emerge from within the earth when the impact of Wormwood splits the crust open.