Part of my World from Above series on a flight from London to San Fransisco I flew over the far northern hemisphere. My guess is that this is Mount Rainier, Washington State, USA from above in February 2013. Captured from about 11,000 metres or 35,000 ft above sea level.
Nikon D7000, Nikkor 18-200mm. Captured in RAW. Postpro corrections and B&W conversion in CS4 with Nik filters.