Black Lake on bricks

On posh Lake Street, near West Clay, in the Seacliff area of San Francisco (or is it still the Richmond District?) I noticed this somewhat playful street sign in front of a mansion on the northern side.

 

RentWiki knows: "The Lake Street neighborhood is one of San Francisco's most desirable locations to live because of its serene residential character, tree-lined streets, and close proximity to the Presidio and Mountain Lake Park."

 

 

Done