@ koputai - Heh, yer I'll check tonight for those signs.
@AstralTraveller - Your right, it's probably someone with a huge spot light for some reason. The thing is though I've lived in this valley my whole life. The distance following the beam back south would not hit the range for a least 20km. And the range isn't very high.
I just can't imagine how anyone in the valley is at any kind of height with a massive light.
It could also have been higher or lower than I though. But I did see it from two different angles and I was able to see the width of the beam overhead v.s. the width in the distance relative to the ground.
It's probably a very simple answer. Knowing the area I just can't put it together though.