This is an image of the Northwestern Glacier in Alaska calving while I was there in July of 2012. Wanna know how big this actually is? Take a look at the bottom center of the picture where the ice meets the water. You will see a bird flying in the middle of it all. When you scale the bird to the glacier, it gives you much greater appreciation for just how magnificent these glaciers are....the boat was a ways away and once the wave got to us it was quite large!
Camera settings: Nikon D700. 1/3200 sec at f/5.6, 190mm at ISO 100, flash did not fire. Taken by Jason Lanier.