What did the Upper Rhine Graben look like more than 45 million years ago, what are the advantages of deep geothermal energy and how exactly does the German-Australian company Vulcan Energy extract lithium from the Palatinate brine, which is so valuable for the production of batteries for electric cars, smartphones and laptops? This and other exciting information was given to students and teachers on a geography course at the Max Planck High School in Ludwigshafen on Tuesday, April 9, during a guided tour of the Insheim geothermal power plant. The eleventh graders listened with great interest to the presentation by two Vulcan employees and asked many questions about the power plant and Vulcan’s mission. The students and their teachers were particularly impressed by the numerous, branching silver and red metal pipes that run through the entire facility and transport the millions of years old hot deep water. Inside the power plant, the group of students then inspected one of Vulcan’s two pilot plants, which are used to filter lithium chloride from the brine.