From the Jungle they Arise was originally published as an update to the Revenge or Rondhol campaign. You can find the original story here.

The Great Weave is a shared, living world, within the Age of Sigmar universe. With collaborative world-building and game creation tools, in addition to an amazing community of narrative players from across the world, the Weave has been created out of love for those that want a richer experience within this wonderful world of magic, heroes, and monsters. Welcome home.