The Hidden Harvest The Hidden Harvest is a quest available in . The Vestige is tasked with ridding the towers of Frostbreak Fortress of harpy nests and destroying the source of the Winterborn ' s briarhearts , accompanied by Eveli Sharp - Arrow and Alinon the Alchemist . Walkthrough . While progressing through the quest stages of " For King and Glory , " the Vestige is eventually tasked with finding a way to enter the besieged fortress of Frostbreak . King Kurog will tell them to speak to Chief Urgdosh , who will direct the Vestige to Siege Commander Dulph . When speaking to Dulph , he will tell the Vestige the following : After learning of Siege Commander Dulph ' s troubles , the Vestige is now tasked with locating the two missing squads of troops . Accompanied by King Kurog , they must enter the fortress , where they will be met by Winterborn troops ; one Winterborn Mage and a Winterborn Savage will be guarding the fortress gate . After defeating them , the Vestige must make their way to a partially destroyed tower , where they will find Sergeant Rorburz and his troops . He will tell the Vestige the following : The Vestige must now take the stone spiral staircase up the tower , and speak to Eveli Sharp - Arrow , the Wood Elf archer Sergeant Rorburz described . The Vestige must speak to her , and direct her arrows towards the harpy - infested fortress tower . Speaking to her will give the option to make Eveli " " Loose her arrow ! , " " which will make her fire her arrow towards the fortress tower , setting the harpy nest alight . Having seen the signal , the Orsimer troops will fire their catapult towards the tower ; a flaming projectile will hit the tower , destroying the harpy nest and all harpies present . This process must be completed twice in order to rid the towers of harpy nests . After successfully eliminating the harpy threat , the Vestige must now locate Alinon , the alchemist who is supposedly capable of putting an end to the Winterborn ' s briarhearts . Alinon is hiding in a camp on the higher grounds of the fort , in between some broken walls . When spoken to , he will tell the Vestige the following : Now that the Vestige has found Alinon and heard him out , they must escort him into the fort so that can destroy the source of the Winterborn ' s briarhearts . Eveli will join them . Once inside , the Vestige will stumble upon a perculiar sight ; the roots of a tree growing out of a decaying corpse . Alinon has the following to say about it : Leaving Eveli and Alinon behind , the Vestige must now search for other briarheart saplings and burn them . While searching the fortress caverns for saplings , the Vestige will have to face several Hagravens and Winterborn troops , this can include Winterborn Archer s , Winterborn Icecaster s and Winterborn Blade - Bearer s . After burning all the briarheart saplings , the Vestige must return to Alinon and Eveli to determine their next step . However , once returned , the Vestige will find out Eveli has lost sight of Alinon : With that , the Vestige must now search through the caverns of Frostbreak Fortress for Alinon the Alchemist . Alinon can be found in a cage , lifted above a fire , urging the Vestige to aid him once they enter the room : The Vestige must now speak with Eveli , who has found a way to rescue Alinon from the cage . With a few well - placed arrow , she should be able to break the chain holding the cage . Assured that Alinon is safe , the Vestige must now make their way to the briar heart tree and destroy it . While making their way to the central tree , one may run across " Ice - Heart ' s Journal " , which contains Urfon ' s whereabouts and views on the Orsimer siege of Frostbreak Fortress . Once the Vestige has reached the central tree in the courtyard of Forstbreak Fortess , they must apply the elixir on the tree and lower its health by attacking it . This can be a quite challenging task , however , because it will constantly be defended by Winterborn troops . Additionally , the Winterborn have also placed Tree Tenders around the tree to heal it . The Vestige must defeat the Tree Tenders to ensure the tree gets destroyed . After a lengthy process of lowering the tree ' s health , the tree will be destroyed , causing it to burst into flames . After destroying the tree , the Vestige must exit the fortress and speak to Alinon : Afterwich the quest will be completed , and the Vestige will receive their reward .