'Pit' in the Bible

And he spake a simile to them, 'Is blind able to lead blind? shall they not both fall into a pit?

and answering them he said, 'Of which of you shall an ass or ox fall into a pit, and he will not immediately draw it up on the sabbath-day?'

And the fifth messenger did sound, and I saw a star out of the heaven having fallen to the earth, and there was given to it the key of the pit of the abyss,

and he did open the pit of the abyss, and there came up a smoke out of the pit as smoke of a great furnace, and darkened was the sun and the air, from the smoke of the pit.