OK, I did a little more searching on the internet, and found that there is more to be found under “Grabhügel” than there is under “Hügelgräber” (which is the word used on the Schondorf municipal website.) A lot more. Between the Ammersee and the Lech river alone there are 167 mounds. In Grafrath, just a ways up the road, there are 250 mounds, old stone-age fortress remains, and a sacrificial stone complete with cup markings. In other words, the place is teeming with pre-historic geological archeological finds. So little time!