Contributed by Patrick Neal / As we orbit Winter Solstice, marking the shortest days, longest nights, and coldest temperatures of the year, along comes the perfectly timed exhibition, “Night Traveling in the Early Country of the Imagination” at Springs Projects in Dumbo. The show, which presents the work of multimedia artists Donna Dennis and Tommy Hartung, is dark, atmospheric, and hauntingly beautiful, evoking the season’s long shadows, monochrome palette, and stark beauty.