Dig out another 3' and build out a basement in the mother. Perfect place for a theater, game room, dungeon, whatever. :) I know several people who have dug out their crawlspaces to create basements. A friend in high school and his brothers dug theirs out by hand over the course of 3 or 4 years. I think that was their punishment when they did something bad....go dig in the basement!
"When I eat, it is the food that is scared." - Ron Swanson