The Karmmer locks complex in the Philips dam, which is the shipping connection between the Oosterschelde and Volkerak-Zoommeer. The locks are technically sophisticated because they must avoid the exchange between the freshwater Volkerak and the brackish water of the Oosterschelde. The locks are designed so that there is no influx of saltwater that enters the Volkerak and only a little fresh water in the Oosterschelde.
<a href="//commons.wikimedia.org/wiki/User:Ad_Meskens" title="User:Ad Meskens">Ad Meskens</a>
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<span class="int-own-work" lang="en">Own work</span>