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.
FahrtreppenStufen. Bild zeigt nicht eingebaute Stufen einer Fahrtreppe Pic shows not built in step of an escalator photo taken by User Robertk User Robertk Escalators
Page 2023 Free-images.com. All images are Public Domain