The pipes were buried in the ground with concrete poured in to support the rectangle post.
Location: Pine @9th Street in Oakland, Ca Artist: Unknown.
I met this artist. Sadly I can't remember his name or read his writing.
Location: 9th Street @Pine in Oakland, Ca Artist: Unknown.
Location: West Oakland, Ca Artist: Bely ASE.
Location: 9th Street at Pine in Oakland, CA Artist: Unknown.
Location: 9th Street at Pine in West Oakland, CA Artist: Irot.