In Star Wars: Force and Destiny Core Rulebook and Star Wars: Force and Destiny Game Master's Screen, both by Fantasy Flight Games, there are images of a building with Jedi younglings practicing lightsaber duels and telekinesis in front of it.
Now, are these merely illustrations for the books, or is there a story for this location and its people? Who is the gray-haired Jedi Master instructing the younglings? Is this a Jedi academy on some jungle planet, and did it actually take place on the official (Legends) storyline? And on which period of time?