<p>It can be found in the Vengoth castle. This is the only place I am aware of.</p><p><img alt="" src="https://i.imgur.com/xVGXZQ1.png"></p><p>Credits src="https://i.imgur.com/xVGXZQ1.png"></p><p>Exact location: <a target="_blank" rel="nofollow" href="https://l.facebook.com/l.php?u=https%3A%2F%2Ftibiamaps.io%2Fmap%3Ffbclid%3DIwAR3Hou_resmOjcp2FUbkiGJTOASAKzLkKYde9Nm2au4R9vNwIc29CarOZ6M%2332954%2C31466%2C5%3A0&h=AT17rNKOG3WnfZXNr0YdLYpqPdxEeyMxJpij2CjKQgSsu-HPLlUetPymnmZ5ImOpt8Rc2vaduC_KAsXaAIl9QAxDNgVSuK3wlKu4jJg-CBFXnlC289AAkuYrmWNuJMmO3y1eTg">https://tibiamaps.io/map#32954,31466,5:0</a>. Actually, there are 2 mirrors like that in this room.</p><p>Credits to Haishen for the screenshot.</p>screenshot and info.</p>