Invasion of the Giant Ice Spiders - (c) Edward S. Fink for BigEyeInTheSky.com 360 degree aerial panorama above an invasion of giant Ice Spiders on Lake Josephine in Roseville, Minnesota. These monsters must have hitched a ride on a meteor that crashed into the lake - they're obviously not from earth.
This is actually a phenomenon caused by the weight of the snow forcing water to drain upward through the ice sheet. The dendrite formation is often called an ice spider, ice octopus, or ice star.
This was my second aerial panorama from my quadcopter.