The Blue Tunnel in Antartica - If you didn't know you were inside a passage hidden away in an ice shelf near the Schirmacher Oasis, you'd probably think you had somehow stumbled into a life-sized lava lamp.
Jade Iceberg, Antarctica. When seawater at depths of more than 1,200 feet freezes to the underside of massive ice shelves, it forms ‘marine ice.’ .. When one of these icebergs overturns, its jade underside is revealed. The wondrous color of this ‘marine ice’ results from organic matter dissolved in the seawater at those great depths. Green icebergs are infrequently seen because their verdant bellies are underwater;... Photo credit: Dr. Steve Nicol More on my Blogspot