RUBICON

Caesar's crossing it with his army in 49 BC was an act of war

• Caesar crossed it

• Fateful crossing point

• Gaul-Italy separator

• Historic crossing of 49 B.C.

• Italian river

• Limiting line

• Polish image for a point of no return (7)

• River famously crossed by Caesar

• River notably crossed by Caesar

• The boundary in ancient times between Italy and Gaul

• A line that when crossed permits of no return and typically results in irrevocable commitment