ScienceMapping Lake ConstanceTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience11/15/2015November 15, 2015Geologist Martin Wessels has mapped the bed of Germany's largest lake. It turns out that in the depths of Lake Constance there are all kinds of fascinating rock formations, canyons, springs, and items of archaeological interest.https://p.dw.com/p/1H5RuAdvertisement