36x24 acrylic inks on board. My first integration of the German Shminke airbrush colors into my normal arsenal. I used the magenta and the indigo colors here in additional to several of the Golden acrylic inks. It came together on the third application, and then I finished it by dropping in some indigo while the surface was still "alive" and creating one final element.
It looks like a line of shining crystals in dark place.