Mora is a region in Sweden. It is a center of manufacture for inexpensive knives with very good steels and edges. A common, but erroneous bit of survival lore is striking your knifeblade against a rock to produce sparks. To work, you need a knife of 60 Rockwell ( the measure of hardness) with a high carbon content. Anything softer, and the flint ( the same stone used in prehistoric edged tools) will merely dig into the metal. At 60 Rockwell the flint strikes minute particles of carbon in the metal, initiating a spark. This is the same technology used in flintlock firearms and fire steels.