Happy New Year! One of my favorite things to photograph in nature is blue ice, and ice caves that form inside of glaciers are especially beautiful. I captured this cave on one of my winter trips to Iceland. The fact that I included the shaded interior as well as the very bright exterior meant I had to create a 7-frame HDR composite to deal with the extreme contrast. The more contrast in a scene, the greater the number of frames must be taken. The snow covered landscape outside the cave was a virtually whiteout. I took this with the 14mm lens Sigma f/1.8 wide angle lens, and the camera was very close to the ice wall on the right -- about 2 feet. I took this with an aperture of f/16, and the ISO was 640. I used a tripod. It's scary going into ice caves because there are thousands of tons of pressure on the roof. That's why I enter these caves at the end of winter -- usually March -- because there has been prolonged cold to insure safety.