There is a glacier(Vatnajökull) that sits on top of the Bardarbunga Volcano in Iceland. Ice from that glacier breaks off into a glacial lagoon and drifts out to the ocean as seen in this photo. That volcano is apparently about to erupt according to local authorities! That could be exciting! A good place to read more about the current volcanic activity of Bardarbunga go here!(Google Chrome will translate to English!) If you would like to follow the Volcano Webcam Here. The Iceland Geology blog is also a great resource to follow along with the Volcanic activity! Iceland Met Office updates here