The best fire pits and a wood-fired pizza oven are already ... ash can be added to a compost heap or dug directly into bare ...

In some parts of northern China, large pits are dug into the ground to form sunken courtyard homes. Also called "dikengyuan" in Mandarin, which means "pit courtyards," the homes are a type of cave ...

Smokeless fire pits provide warmth in the winter and can ... Native Americans employed the Dakota Fire Hole—essentially an in-ground fire—to prevent flames from spreading or burning out ...