May have hitched a ride from someone who camped in Lone Pine Campground and was unaware of the bandit, or due to the extremely warm temperatures that little feller likes to acclimate (coming from Owens Valley) and make friends with the bears.
Living in Coarsegold, CA (elev. 1500), my wife and I have encountered scorpions no larger than a U.S. quarter. They were easy to spot on our white ceiling and walls but were difficult to spot on our dark brown hardwood floor. A spatula or pair of tweezers eradicated the little booger. I must have killed at least 40 during the 5 years we have lived in our house. When I first saw my first one, I couldn't believe my eyes how small they were.
They don't like cold (like reptiles). They search for warm spots and like to wedge in between things. They crawl of the heat registers in the ceiling or they crawled in through the vents in our windows.
They can climb onto anything (they don't like spider webs and carpet) and are very fast if startled on smooth surfaces.
Anaphylactic shock very possible requiring immediate medical attention if extremely allergic.
It is very interesting to hear of scorpions in the Portal area. Yes, it reinforces the idea to zip up everything and checking your boots before inserting your foot.