Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.

Photographer: Allen C. Browne
Taken: May 15, 2013
Caption: How a Lift Lock Works -- 1
Additional Description: A boat heading downstream enters the lock. Mules are unhitched and the lock tender closes the upstream gates.
Close-up of picutre on marker
Submitted: May 15, 2013, by Allen C. Browne of Silver Spring, Maryland.
Database Locator Identification Number: p242161
File Size: 1.783 Megabytes

To see the metadata that may be embedded in this photo, sign in and then return to this page.