I'll have to find that. Be interesting to read. But probably just rehashed what's on the board. Does it show the roofed little kiosk. Or just the highway marker.
The kiosk thing has the good info. And I think it's just someone's personal project.
If you are in the neighborhood.
At the hospital take Upper Snake Spring road to the T.
Turn left, it's at the top of the mountain.
There is a private road (I think) with a gate, on the left.
The kiosk is back that road.
