http://ycombinator.com/newsguidelines.html 'Please submit the original source. If a blog post reports on something they found on another site, submit the latter.'
Also, there is nothing 'secret' about these - they appear to be an entirely natural phenomenon.
More scientific but there is a paywall: http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo19...
http://www.popsci.com/article/science/big-pic-820-foot-high-...
http://ycombinator.com/newsguidelines.html 'Please submit the original source. If a blog post reports on something they found on another site, submit the latter.'
Also, there is nothing 'secret' about these - they appear to be an entirely natural phenomenon.