The Holes in Concrete

Wednesday, August 5th, 2009 at 8:29:27 AM · Photo Archive/2009/sewer_tour

A close up shot of a concrete block with multiple holes, taken during the 2009 sewer tour. The holes might seem random, but they serve an important purpose in transportation and watercraft infrastructure. Tags include plywood, wood, vehicle, dinghy, boat, and more.