Mika here knows what he is doing, and knew that he only had one day in which conditions were ripe for running across Ukkijärvi Lake in Kangasala, Finland. According to the YouTube description, the lake is relatively small and freezes thick enough to skate on in the winter, although it is often covered with snow. This winter, there has been very little snow so far. The lake froze to 10 centimeters thickness, perfect for skating. Then the weather warmed a little, causing the ice to melt just enough for a couple of millimeters of water to form on top. This left the deliciously clear ice looking like clear water. Mika put on his running spikes, dressed as if it were summer, and was able to film himself running on the lake on December 10. Let's hope he got some warm cocoa afterward for his efforts. -via Digg
The *only* thing that makes this moderately safe is someone else being there doing the filming.
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