A scenic valley on Romulus, simulated on the Enterprise-D holodeck by Data in 2366 in an attempt to comfort the defecting Admiral Jarok.
The Valley of Chula is a location on Romulus seen as a holodeck recreation in the Next Generation episode The Defector.
Admiral Alidar Jarok, having abandoned his home and family to warn the Federation of a supposed attack, tells Data how much he already misses Romulus. He speaks of the firefalls of Gal Gath'thong and the Apnex Sea.
Data takes him to the holodeck and shows him the Valley of Chula from the ship's records. Jarok is moved for a moment, then orders the programme ended, saying that it is not his home and that he can never see the real one again. The scene marks the point at which he decides to tell Picard everything.