How often does a wood log get some technological lovin? A log is a log is a log, is it not? Not the Stump Stove. It’s a log that has been cut according to the specs of the companies patent which allows it to burn five times longer than a traditionally cut firewood log. You can even extinguish it and reignite it multiple times. One single 16-inch log, depending on diameter and density, can burn well beyond 3 hours. Compare that to a typical night out camping, and you’re burning anywhere from 2-6 bags of firewood.