Fateful crossing point
Else clues• Caesar crossed it
• 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
• Caesar's crossing it with his army in 49 BC was an act of war
• A line that when crossed permits of no return and typically results in irrevocable commitment