Subfloor tunnels of lock (2 of 2)

Photograph showing a view looking west, the full length of the lock, showing water transfer tunnels beneath lock floor.
Abstract/Description: Photograph showing a view looking west, the full length of the lock, showing water transfer tunnels beneath lock floor.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1911 (approximate)