Mushroom Pipes: These pipes or vents on the sidewalk along Kearny St. in San Francisco have been marked for what looks like a Mario-land effect. I was scoping the 'hood with Wilson at the time, and here is his picture of the same.

Snapped on: March 3, 2005.

Hasselblad 503cx, Planar 80 C T* ISO400, Kodak 400TMY film, I forgot my lightmeter at the office and totally guessed the EV on this one. Developed with TMax Dev 1:4 7min @20°C.