Gypsum
Porphyry quarry, Kropbach, Staufen im Breisgau, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
Colourless gypsum crystals. Sony Alpha 7R ii, bellows, Mitutoyo 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control. Collection and photo: Stephan Wolfsried
© Stephan Wolfsried 12/2018