It sometimes happens in Yosemite. You look up at a sheer cliff, rising straight up from the valley, and realize … that small moving black speck? It’s a person up there! The other day, looking up at Sutro Tower, I had a similar feeling. There was something small and black suspended from it, moving.
As I continued to look, I realized it was indeed a person, riding in a basket or gondola or whatever it’s called, suspended by ropes high above the city. I’m sure he (or she) was getting slammed by the wind. But what a view!