Sideline Productions showcases the defense of Caernarfon castle with Celtic Laser.

Sideline productions lines up the weaponry from Celtic laser to re-enact a seige that would occur at Caernafon castle back in its day, showing how few individuals could defend the walls from hundreds of invaders.

The crew took it upon themselves to defend the walls from a local rugby team, all filmed for a documentry to be seen in the coming years on channel 5.