Sandhöhlen in Mexiko
Der Typ hier baut seit 25 Jahren atemberaubende Sandhöhlen in Mexiko. Krassomat. For 25 Years, One Man in New Mexico Has Been Turning Cave Formations into Natural Cathedrals – Cheezburger.
Cool, aehmm hot idea…!
Ever needed a bowl in a desert and not having anything around except this: Markus Kayser – Solar Sinter Project from Markus Kayser on Vimeo. Make: Online | Solar Sinter Project: 3D Printing with Sunlight and Sand.