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203616 sightings reported...
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Grand Lake, CO

Sighted on Tuesday 20. December 2011
Reported on
Shape: Light | Duration: 20 minutes
Source:

We saw a half circle light beam that had no explanationAt 1 in the morning on the listed date we were heading to bed when my friend pointed a strange light moving in a half circle motion. It was constant and happened every other second. Every other light flash was dimmer and the other brighter. We tried to think of very possible explanation which is why I am 3 days late. While I was thinking of what it could be I dozed off and when I woke up 20 mins later It was gone. We bot agreed the light looked to be At least a few thousand feet in the air. That day we drove to where we though it was and there was a mountain a few hundred feet.

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