Columbia Glacier at Columbia Bay of Prince William Sound, Alaska, is one of the fastest retreating glaciers in the world due to climate changes. The hope is, now that the glacier has almost retreated to land, it will stop retreating and start approaching again at some time. The tour of kayaking to the face of Columbia Glacier starts from Valdez, Alaska and is a popular one. Although not dog friendly, I highly recommend this once-in-a-lifetime experience.
