Astronauts Spot Mysterious Ice Circles in World’s Deepest Lake

[Truthed]

Astronauts aboard the International Space Station noticed two mysterious dark circles in the ice of Russia’s Lake Baikal in April. Though the cause is more likely aqueous than alien, some aspects of the odd blemishes defy explanation.
The two circles are the focal points for ice break-up and may be caused by upwelling of warmer water in the lake. The dark color of the circles is due to thinning of the ice, which usually hangs around into June. Upwelling wouldn’t be strange in some relatively shallow areas of the lake where hydrothermal activity has been detected, such as where the circle near the center of the lake (pictured below) is located. Circles have been seen in that area before in 1985 and 1994, though they weren’t nearly as pronounced. But the location of the circle near the southern tip of the lake (pictured above) where water is relatively deep and cold is puzzling.
The lake itself is an oddity. It is the largest by volume and the deepest (5370 feet at its deepest point), as well as one of the oldest at around 25 million years. The photo above was taken by an astronaut from the ISS. The photo below was taken by NASA’s MODIS satellite instrument.

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[kidflash2008]

Thank you for the find, Truthed. I do wonder what could create two circular shapes such as the ones shown above. Hopefully, they will find some people willing to brave the frigid water and inhospitable area to dive in and search for the answers.

[kissbang]

One of the interesting theories suggests an under ice photo-plankton bloom as follows.

[QUOTE Lake Baikal ice: analysis of AVHRR imagery and simulation of under-ice phytoplankton bloom[/QUOTE]
Generation and sample applications of an integrated set of multi-spectral remotely sensed products for investigations of Lake Baikal's ice cover variability are presented. Different ice-snow cover classes and unfrozen water distributions are estimated from calibrated and navigated Advanced Very High Resolution Radiometer (AVHRR) 1.1-km imagery of Lake Baikal for January 1994 through May 1998. The calculated downward irradiance field in the photosynthetic available radiance band has served as input for a bio-optical model of phytoplankton dynamics. It is shown that the relationship between the production of main taxonomic groups of Baikal's phytoplankton is highly sensitive to the variability of ice conditions.

[Area-51]

I belive, that these circles were created by impact from two meteorites on earth. The shape reminds of it + it deep under the surface.

I doubt, that this is some sort of alien vehicle oder ufo or something.

[punyhuman]

My guess, its a hotspot under the lake that melted the ice in a ring formation. If the lakes 25 million years old, the water must come from somewhere. Underwater geysers maybe?