thunderstruck9: Michael Koerner (b. 1963), Waterfalls #7290,… Posted on February 11, 2019 by SAUCER KOMMAND thunderstruck9: Michael Koerner (b. 1963), Waterfalls #7290, 2018, from the Waterfalls series. Collodion on tin, 8 x 6 in. via inneroptics