Valeira Lock; 1976; Douro River; 109 foot water level change; engineering feat, navigable water, Europe; Portugal; spring; vertical

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Size: 2890px × 4500px
Location: Douro River, Portugal, Valeira Lock
Photo credit: © Sally Weigand / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 109, 1976, change, douro, engineering, europe, feat, foot, level, lock, navigable, portugal, river, spring, valeira, vertical, water