Don’t what this thing is …. Russia:
Giant crater found in Siberia near ‘end of world’ < has video
“Video of the 260-foot-wide hole has caused such a stir in the region that a team of Russian scientists was due to arrive today to try to determine its origins….”
The Watchers - Gigantic sinkhole opens up in Yamal Peninsula, northern Russia < has Google Map
NBC- Deep Mystery: Theories Fly Over Giant Black Hole in Siberia < note they link to Lake FUBAR story at the bottom ;)
PHOTOS of what impact craters look like
Siberian crater is just one of many mysterious holes around the world
[snip] . . . “the most likely cause put forward by scientists so far involves a buildup of an underground gas pocket that ignited. If it was formed through natural means, then that would point to a melting of permafrost or an enormous ice block, possibly caused by the recent warming of the Arctic region. However some suggest that it’s not coincidental that the area hosts one of the richest gas reservoirs in Russia, and possibly there was an ongoing buildup of underground gas until increasing pressure simply caused the ground to blow its top.”
“. . . . More recently at Indiana Dunes National Lakeshore, about an hour from Chicago, the sand dunes unexpectedly began acting like quicksand, forming holes. Park rangers were alerted last year July to these weird formations when a 6-year-old boy was climbing a dune that suddenly gave way and swallowed him up whole. After three hours of frantic rescue efforts, they managed to extract him from an 11-foot-deep cavern, and he fortunately survived.
Now researchers from Indiana Geological Survey and the local university are drilling core samples and using ground-penetrating radar to probe the dunes and map out their architecture, and have been finding more of these subsurface anomalies in the park. Scientists so far have been at a loss to explain their origins, but have found more of these openings and as a precaution they have kept the area closed to the public.”
“.. an ongoing buildup of underground gas…” Kind of like Bayou Corne?
Pravda – Giant sinkhole in Russia’s north puzzles scientists
[ snip] Russian scientists conducted a primary examination of the giant sinkhole in the Yamal-Nenets Autonomous District. The video of the bizarre hole on YouTube has received more than two million views in several days. As a result of the examination, the scientists concluded that the crater was of natural origin and did not appear either as a result of a manmade impact or the fall of a meteorite, the website of the regional government said.
There was no dangerous radiation detected on the site of the giant sinkhole. The scientists, who arrived to examine the sinkhole on the instructions of the regional governor Dmitry Kobylkin, said that the sinkhole appeared “as a result of a natural phenomenon, the nature of which is impossible to establish yet,” the report said.
“There is no terrestrial impact here, – Marina Leibman, a member of the scientific mission, chief researcher at the Institute of Earth’s Cryosphere said. – A careful examination showed that there was no trace of human presence on the site of the object. Assumptions about a hot meteorite are also groundless, otherwise, there would have been traces of charred rock,” the specialist said.