Margerie Glacier, Glacier Bay Alaska 

Panning view of the front edge of the glacier with a small water craft and six colorful kayaks in the water in front of the glacier. We were on a ship about a mile away from the leading edge of the glacier; the kayakers were roughly 1/4 mile away, possibly closer due to how small they appear. We were told that the portion of the glacier where it touches the water is about 200' tall. It's difficult to wrap your head around these numbers when looking at the video.