Groenendaal - Harmelen, NL
Posted by: 
Keifoort
N 52° 05.088 E 004° 57.816
31U E 634540 N 5772289
Siren is located on Groenendaal in Harmelen.
Waymark Code: WM14Q6H
Location: Utrecht, Netherlands
Date Posted: 08/09/2021
Views: 6
The air raid siren is a sound signal to warn the population of dangerous situations. A siren is traditionally used for this alarm system, which is why the alarm is also called the siren.
The air raid siren was once introduced to warn the population of an air raid (as in World War II), but it can also be used for other dangers, such as air pollution.
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