Despite their beautiful appearance, these strange white bubbles trapped just inches under the surface of this frozen ice are in fact highly-flammable pockets of toxic gas methane with potentially deadly effects. The bubbles are formed when plants on the lake bed release methane gas, which freezes as it nears the cold surface of the lake, with further bubbles stacking up below.
(Xinhua photo)
These stunning photographs of the phenomenon were captured on the frozen ice over Lake Abraham, located in Alberta, Canada, among the foothills of the Rocky mountains.
(Xinhua photo)
(Xinhua photo)
