Petra

Petra is an NPC that is rescued during the One Small Favour quest. She is a friend of Phantuwti Fanstuwi Farsight of Seer's Village. She has been trapped in the rock in the Goblin Cave. In order to free her, you must bring iron oxide to Wizard Cromperty in Ardougne. He will then give you an animate rock scroll which you can take to the Goblin Cave in order to free Petra. Once Petra is freed, Phantuwti Fanstuwi Farsight will agree to give you the weather forecast.