untitled craters

Daniel Gustav Cramer, Untitled (Crater), 2009
Jean Comandon, Les Anneaux de Liesegang, 1924 © CNC
Simon van Til, Moonlit Disk
Luke Gilford, Oil stain 01 Nebula or pillars of creation
Oskar Fischinger
Paul and Prosper Henry, Nebuleuse de la Lyre (Nebula of Lyra), ca. 1885
Rana Hamadeh, A River in A Sea in A River', 2014.
Part of her exhibition at KIOSK, Ghent (till March 23rd on show). 
Udachnaya Diamond Mine, Russia
Underwater circle