Thank you Mr. Luchs for your suggestion of handrails on those Spencer Butte stone steps!!!!
Having been climbing Spencer Butte since the 1960s, I've loved that experience-- until a while back when I experienced those new stairs.  
The combination of "balance problems, " stiff knees and bifocals made the descent on those steep stone steps  so precarious I've never been back to the top of our beloved butte.
The city is fortunate  no one has taken a nasty tumble there.  Yet.