A modern knapped stone knife, fit in handle as experimental model of a knife found in the archaeology of Lake Pfaffikon, Switzerland, dating to the Neolithic Pfyn Culture(around 3,700-3,300 BCE).  This replica features a flint blade struck from a core, with similar flake morphology to original, being made the same way.  It is fit into a groove in the wood handle with natural pitch/charcoal adhesive, shaped in the manner of the original.  The Pfyn Culture in the northern European Neolithic belongs to the Pile Dwelling lake lifeways.  Many cultures during that time period were building stilted villages called Pile dwellings, which are now under water in the area of the lakes of Switzerland, Austria, and Germany.  The original knife here had the wood still intact due to water preservation, and is classified as a "fist knife" which would have been suitable for small cutting chores such as cutting wood tools, saplings, and basketry parts.  It measures about 4 inches long with a 3 inch flint blade fixed.