The Speleonaut was designed in collaboration with Gehringer's friend, the cave diver Jochen Hasenmayer, who has used it since 1996 to explore the Blautopf cave system.
Konrad Adenauer | György Konrád | Konrad Lorenz | Konrad Zuse | Konrad von Hochstaden | Konrad I, Duke of Głogów | Konrad I | Konrad Duden | Konrad Witz | Konrad von Preysing | Konrad Ruhland | Konrad Osterwalder | Konrad Friedrich Bauer | Konrad Adenauer Foundation | Johann Konrad Wilhelm Löhe | Friedrich Konrad Beilstein | Arnold Pannartz and Konrad Sweynheim | ''Portrait of Aino Kallas'' by Konrad Mägi | Konrad Zuse Medal | Konrad Wysocki | Konrad Wolf | Konrad Wachsmann | Konrad von Marburg | Konrad von Erlichshausen | Konrad Tuchscherer | Konrad Tom | Konrad Schmidt | Konrad Nordahl | Konrad Mutian | Konrad Mannert |