No cannons then, but it might have been destroyed by a projectile from a ballista (https://en.wikipedia.org/wiki/Ballista https://en.wikipedia.org/wiki/Ballista

No cannons then, but it might have been destroyed by a projectile from a ballista (https://en.wikipedia.org/wiki/Ballista https://en.wikipedia.org/wiki/Ballista) or an onager (https://en.wikipedia.org/wiki/Onager_(weapon) https://en.wikipedia.org/wiki/Onager_(weapon))