"East 2 West Source Point" - a.k.a. "Plumb Bob Brain" - a Denver, Colorado outdoor streetside sculpture by Larry Kirkland. It is a two-sided "Janus" head, which is pierced by a square opening, in which hangs a golden plumb bob, a construction tool. Made in 2003 of carrera marble, cast bronze, and gold leaf, the sculpture is at the corner of Colfax Avenue and 14th Street.

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