Step Two: Let fireplace burn down to a nice bed of coals and rake coals over to one side.
Step Three: Put some water in the bottom of the dutch oven. Nestle into fireplace, near, but not on, the coals.
Step Four: Place the inverted lid full of dough onto the bottom part of the dutch oven. Congratulate yourself on your cleverness.
Step Five: Bake for about an hour, turning the dough periodically. Smile to yourself at how well it seems to be doing.
Step Six: Decide the bottom is still too doughy. Remove bottom of dutch oven; place lid directly on coals; bake 10 more minutes.
Lesson, learned yet again: fire is hot.