Thousands of soldiers were brought into the castle’s walls. Six to 12 men would guard St. John’s Tower - where the door was found - in the castle’s great outer ditch at one time.

Here’s how it works. Mojang has updated the Windows 10 and Windows Phone Pocket Edition of Minecraft, adding support for the new Fantasy Texture pack to the popular sandbox game.

The door has been removed from St. John's Tower and underwent conservation procedures ahead of its planned display at Dover Castle, now a museum, in July.