It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
Arch Constantine reliefs Rome Italy. fr Arc de Constantin basreliefs Rome Italie en Reliefs of the Arch of Constantine Rome Italy for photograph own Jebulon cczero Uploaded with Arch of Constantine Constantine's frieze Arch of Constantine Hadrian's round Boar hunting in art Quality images by Jebulon
Page 2017 Free-images.com. All images are Public Domain