Confirming or falsifying this and locating the potential impact crater seems relatively easy conceptually, but it requires that they go beyond the archeological

Confirming or falsifying this and locating the potential impact crater seems relatively easy conceptually, but it requires that they go beyond the archeological approach and into statistical geological tools. Shocked quartz is characteristic of impact events, and if shocked quartz is present in a layer here, it will be present in the surrounding areas (all of them, not just the ones where warfare is a reasonable alternate hypothesis) in a characteristically greater thickness & concentration, centered on the crater. Drill a few hundred or a few thousand sediment cores from the surrounding areas, and map out the shocked quartz layer.