Doubs
Place
Gallic War 1.38 supplies the first indexed source portrait: “… Caesar thought that he ought to take the greatest precautions lest this should happen, for there was in that town a most ample supply of every thing which was serviceable for war; and so fortified was it by the nature of the ground, as to afford a great facility for protracting the war, inasmuch as the river Doubs almost surrounds the whole town, as though …”
Named form in selected editions; identity established only to the extent of the cited context.
Gallic War 1.38
Caesar
… Caesar thought that he ought to take the greatest precautions lest this should happen, for there was in that town a most ample supply of every thing which was serviceable for war; and so fortified was it by the nature of the ground, as to afford a great facility for protracting the war, inasmuch as the river Doubs almost surrounds the whole town, as though it were traced round it with a pair of compasses. …
Geographical record
Pleiades representative point · precise
The ancient Dubis is the modern Doubs river.
Pleiades 177508 · CC BY 3.0 · Barrington Atlas: BAtlas 18 C2 Dubis fl.