The image has very dominant shadows, which makes it quite interesting to look at in my opinion. Very visible in the bottom part is the Brady Glacier, which is almost 40 kilometers long.
In the upper part of the image, partly hidden in the shadows, you can see the John Hopkins Glacier, a 19 kilometers long tidewater glacier.
Take a look at this Earth Observatory article for more information and some images of the Glacier Bay National Park taken from aboard the International Space Station.
You can download the full-size images (9268 x 5822) here on Flickr: