This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionMicroalgenkwekerij te Heure bij Borculo.jpg
Nederlands: Microalgenkwekerij van de firma Ingrepro. Het water wordt constant in beweging gehouden met behulp van een aangedreven schoepenrad. De kwekerij bestond tussen 2009 en 2012
English: Raceway pond used for the cultivation of microalgae. The water is kept in constant motion with a powered paddle wheel. Experiment between 2009 and 2012
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.