Jökulsárlón Lagoon is a small body of water filled with icebergs from the nearby Breiðamerkurjökull Glacier. We arrived for our boat tour of the lagoon a bit early, just in time to see an iceberg split in half and flip over. Unlike the opaque white ice on the top of the iceberg, the ice that had been in the water was a gorgeous, clear, blue. And as you can see, it can be sharp and angular as well, and very dangerous for boats that get too close.