Stephenson Mountain Thundereggs
A less typical Ochoco location, as can be seen in that very different maitrix. Stephenson Mountain is located in a small patch of public land that is completely surrounded by private property - so the only (legal) way in is by helicopter! It seems to contain a sublocation - Opal Creek - which is often seen as a tag and the precise geology here is unknown to me as yet. I am simply following the original tags that I have for these stones.