Upload & Sell: Off
Mark, just a spot of black and a handful of shades of gray...brilliant!
... and now for something rather different...
Mesquite Dunes, Death Valley. D800E, 105mm 2.5 AIS, 3 shot horizontal pano, 1/250 @ 11, ISO 100, tripod. Other interesting EXIF element: Altitude -120 feet (but I can't vouch for that).
Silver Efex Pro 2 after Lightroom