Photo taken from the full-domed McKinley Explorer (GoldStar) train between Fairbanks,Denali, and Anchorage.
Lots of silt in Alaska's rivers makes for the grey look of the river (Susitna or Knik River (?)).
Best viewed in 'original' size.
Nikon D70s
,Nikkor 28-80mm f/3.3-5.6G 1/250s f/8.0 at 44.0mm iso200
UnCropped but Reduced to 42 dpi for Internet Viewing
full exif