Transverse view of lock, outflow tunnels

Photograph showing the three parallel tunnels in the foreground as they pass under the mitre sill for the lower gate (sill and gate are not yet built). These tunnels handle the water which flows out of the lock chamber while being emptied.
Abstract/Description: Photograph showing the three parallel tunnels in the foreground as they pass under the mitre sill for the lower gate (sill and gate are not yet built). These tunnels handle the water which flows out of the lock chamber while being emptied.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1912 (approximate)