00:00A giant iceberg suddenly surged upward in an Icelandic glacier lagoon.
00:04The massive block of blue-white ice began rolling onto its side.
00:08As it flipped, water poured from the newly exposed surface.
00:12The movement sent tsunami-like waves racing across the lagoon.
00:16The unusual event may have been caused by submarine calving.
00:19That happens when ice breaks free from the submerged part of a glacier.
00:23Buoyancy can then send the underwater ice rapidly toward the surface.
00:27Newly calved icebergs can also become unstable and suddenly capsize.
00:32Scientists say these movements can generate large surface waves.
00:36Similar iceberg activity has been documented at Alaska's Columbia Glacier.
00:40In Iceland, the dramatic flip created a striking pulse of water.
00:44The waves spread outward as the iceberg settled into a new position.
00:49Glacier-generated waves have even attracted experienced surfers in Alaska.
00:53Some have ridden waves reaching up to 25 feet.
00:57But an unexpected iceberg flip remains highly unpredictable.
01:00The footage shows how powerful and unusual glacier physics can be.
01:04Disclosure.
01:05This video contains stock footage and content created or enhanced using AI-assisted tools.
01:10This video contains a lot of information.
01:10This video contains a lot of information.
01:10This video contains a lot of information.
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