This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Katwijk flag outline. Flag of the Dutch town of nl Katwijk Zuid Holland outlined version for use against light background Flag of Katwijk svg PDNLgemeentevlag Symbols of Katwijk South Holland Katwijk Flag Flags with centered oblique crosses Katwijk Flag Superseded flags of municipalities of South Holland Katwijk Blue and white flags