Work / monument · infrastructure

Fossa Carolina

793 · 8th century · Also known as Karlsgraben

The Fossa Carolina was a canal that Charlemagne ordered dug in 793 near Treuchtlingen in Bavaria to link the Rhine and Danube river systems through the Altmühl and the Rezat. The work was abandoned unfinished, apparently because of rain and soft ground, but a stretch of the ditch survives as a pond and earthworks.

Fossa Carolina
Image: CC BY-SA 3.0 · Wikimedia Commons

Mentioned in 1 state history

Free Imperial City of Weissenburg

See also

Cite this entry
APA
The Epoch Institute. (2026). Fossa Carolina. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/fossa-carolina
MLA
“Fossa Carolina.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/fossa-carolina. Accessed .
Chicago
The Epoch Institute. “Fossa Carolina.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/fossa-carolina.
Harvard
The Epoch Institute (2026) ‘Fossa Carolina’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/fossa-carolina (Accessed: ).

Last reviewed October 2026Random entry ↻