Join this annual gathering of rock stars… OK, rock stars, as in experts in geology, archeology, paleontology and speleology. Ever wonder how humans created the first tools and weapons using nothing but rocks? The flint-knappers will show you how it was done, alongside authentic prehistoric artifacts. Modern replicas will be for sale so the kiddos can take the feel of the past home with them. This is sure to be a lot of fun for the whole family and spark the imagination of the young ones. The event is free, while there is a $10 parking environment fee for non-Bernheim members. —Aaron Yarmuth