Diamond dust season is about to begin, the hissing of guns at the Ruka resort may be heard already at the end of September. To get in the spirit, let's reach into the drawer and grab this display which appeared on the night of 7/8 February 2017 in Rovaniemi. At first it was bog-standard plate with CNA, sub-120, and sub-Lilje / subparhelic circle patch opposite to the lamp, but then it changed, giving these long subparhelic arcs. The lamp sits at the usual ~5 degrees below the horizon. The location is Sieriaapa bog some 6 km east from the ski center. This is the direction where the diamond dust most often heads to, guided by the prevailing wind and topography.