dendritic patterns

At www.thunderbolts.info/wp/2015/11/20/neolithic-man-and-the-electric-unive… … starts with a dendritic pattern distinguished by vegetation near Ostia, the former port of Rome. The ridges can be clearly picked out. Along the Italian coast such features are said to be common. The author of the piece speculates these were formed by thunderbolt strikes (lightning) which sent massive shockwaves ripping through the Italian countryside. He goes on to allege Neolithic communities experienced such geological change and fearsome lightning which is an interesting theory and worth exploring as it may be telling us something important. Brian Cairns suggests heavy lightning threw lots of debris into the air and people built shelters such as Nuraghe in order to avoid getting a headache.