Corundum
Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
Collection: KH Tausend, Saarbrücken
Photo: Edgar Müller, Saarwellingen
Olympus OMD EM5 II, tube (18 cm), Photar 25mm, f2.0, linear actor (Stack Master), Stack Master control.