That's cool. It's awesome to accidentally find a nice point! I think OldDigger might be right, it could have eroded down from a camp up hill.
High and sort High altitude archaeology is an open frontier in many areas of the west. Fur trappers, traders, Lewis & Clark, etc. didn't see or hear of much activity way up, and maybe in the 1800's not many groups used those high altitude resources, but there is a lot evidence that ancient man seasonally used the bounty that is available a couple of miles up the in the mountains. Lots of types of plants with bulbs, little mammals, sheep, goats, bears, fish, fresh water in dry areas, etc.
One of the Archaeological surveys in Wyoming found several small rock blinds and tools above 13,000 feet in the Wind River Range, and there is a pretty decent quarry and site near the Titcomb lakes which is right around 10,000 feet.