It is an aerial view of the end of a logging road. The interesting object you see is a gravel pile that is partially covered with snow. Melted in spots.
The pile of gravel/rock is there to build the road.
Nothing mysterious if you know what you are looking at.
It does not look as though it is glowing to me. I think it is just an area of light colored dirt, clear of vegetation. It is probably where vehicles turn around and/or park by the white building just to the left.
I have seen much odder things than that on Google Earth/Maps.
ETA: Oh OK, the white thing is gravel pile is it? But why should there be snow on it and not elsewhere?
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Thread title changed from “What is this strange glowing object in Wyoming?” to “What is this strange glowing object in Montana?” at your request.
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Turn off labels and you’ll see the whole road is glowing nearly as much. The road to the north is glowing more, about the same as the dead-end in question.
The USGS topo map says it’s a “comm site” or “radio facility” depending on which size map you’re on.
Seeing as it’s just about on the state line (which at this point is the continental divide and therefore something of a high point), I’ll bet it’s a radio tower or a cell-phone tower.