Fusion projects have a thing for  mountain names. "Project Matterhorn" was the code name for the controlled thermonuclear research effort started by Princeton University in 1951 under the leadership of Lyman Spitzer. Thirty years later, when the Max-Planck-Institut für Plasmaphysik had to decide on a name for its stellarator, it chose that of 1,838-metre high mountain in the Bavarian Alps, "Wendelstein". A first Wendelstein (7-AS) operated between 1988 and 2002; a second one (7-X), is being assembled in Greifswald, in the German Land of Mecklenburg.