L: Barge entering lock from Lake Pontchartrain; R: Coast Guard Patrol Vessel exiting lock

L: Industrial canal lock facility (U.S. Army Corps of Engineers); R: lock gates closing

Tows in the lock; R: fuel barge heading to Lake, looking towards Mississippi; R: Looking towards Lake

L: Discussing lock operations; R: Oliver White (U.S.A.C.E.) discussing lock history at visitors center

L: Beneath the lock facility; R: tunnel running length of lock

Draw bridge at Mississippi River end of lock (note the tow in background waiting to enter lock); L: tow transiting from Lake to the River