Jumbo's L

So suddenly Cooper, who is about an avid of a hiker as a 3 year old can be, decides he in fact does not want to hike at all. And that means one of us carries him -- Laura does it, this time. It's a short carry, though, because soon enough he spots the L and is all about hiking to it. The L sits midway up Mt. Jumbo and stands for Loyola High School, a private school in the valley. How did they get their own letter on the mountain? Only local lore explains this so far, but it's somewhat comical to look across the valley and see "L" on one hillside and "M" on the adjacent. Where is N, O, and P? Off the concrete block, arrowleaf balsamroot is in full bloom.