Let’s go to Spain , in the “Spanish” Catalunya, and pass the frontier bordering the coast:

To Llança, along the railroad track, close to the Station, It is a place said Setcases.

See here against, the photo extracted of Google Maps.

Site Web of Llança

(where it is question of Deciana)

Zooming in this photo, one sees on the grounds behind the station differences of dyeing in the vegetation perfectly rectangular as are it often the trails of the roman time.

Then: Deciana ? ...