I worked at a summer camp in college. We had some campers and staff build a fire near the river and neglect to fully douse the embers. Hours later there was an "all hands" call on the radio. The fire had spread in about a 10 foot radius by the time we got to it. Since the soil was so loose and sandy, it had caught the roots on fire. Took hours of digging to put it out. Could not have been controlled without a team, equipment, and a quick response.