I was car camping a few weekends ago, some snow, but none on my picnic table in the CG, had a campfire that night in the metal enclosed pit. Sparks still popped out and landed beyond the required clearance around the fire if I was out of a CG. The cinders still stayed alive for awhile after landing on the frozen ground. Hate to think of people who have no idea on clearances around a fire and so many fail to put the fire out properly too.