Possible Clues:

• Darts throwing line
• Two revolutionaries gamely throwing projectiles from here
• Darts playing line
• In darts the line behind which players must stand
• Eric Bristow speaks of the game behind which he stood
• Local site for missile launch?
• Wartime enemy heading off for the firing line
• Some ricochets in the line of darts
• Darts players throw from it
• In darts, the line behind which players must stand