A closer look

Paddling a tiny plastic boat through freezing Icelandic waters is already a questionable life choice, but Jökulsárlón takes the peril up a notch. This glacier lagoon is choked with massive, electric-blue icebergs that have calved off the Breiðamerkurjökull glacier. Because 90 percent of their mass is hidden underwater, these ancient ice chunks constantly shift their center of gravity and aggressively flip over with zero warning. Kayakers get an intimate, front-row seat to this violent geological lottery, navigating a labyrinth of melting history.