Corpus Nummorum, http://www.corpus-nummorum.eu/CN_55456 [Last downloaded:2025/06/11] © License: CC-BY 4.0 Photographer: Lutz-Jürgen Lübke (Lübke & Wiedemann); The resting river-god Hebros
Pontus Euxinus © https://oceancolor.gsfc.nasa.gov/gallery/782/