Frostflow Abyss ( Quest ) Frostflow Abyss is a quest available in . Overview . Frostflow Abyss quest is obtained upon entering the Frostflow Lighthouse for the first time . Due to the enemies encountered ( including Falmer and a Chaurus Reaper ) , it is not advised for low - leveled players to undertake the quest . Upon entry , the lighthouse interior is in disarray , with several grisly murders having been committed in the lighthouse . The Dragonborn is given the task of finding the source of the murders , and upon reading the journals found in Frostflow Lighthouse , the Dragonborn will find clues regarding what has happened and how to proceed . The unique reward for the quest is the active effect Sailor ' s Repose . Walkthrough . Begin the primary quest . First , obtain the key for accessing the cellar of the lighthouse from within a burial urn on the mantle above the fireplace ( as stated within Sudi ' s Journal ) . Unlock the cellar door , and proceed down the stairs , taking care to avoid the bear traps on the steps . Kill any Chaurus in the cellar , and go to the opening in the far wall . Find Mani . Go through the opening , and enter the Frostflow Abyss and deal with the Falmer and Chaurus in the first room . After dispatching them , look around and find Mani ' s remains . Find Sudi . Locate the next passageway , and head deeper into the abyss . The next chamber has Falmer dwellings and a fenced - in area where Sudi ' s body lies , along with the Scrawled page and Bloodstained note . There will also be Falmer and chaurus . Find Habd . Continue exploring , dealing with the chaurus as preferred ( killing or sneaking past them ) until the Dragonborn arrives at a hole in the floor where the only way to proceed is to jump down onto a ledge . Do so , and kill the chaurus that are in the area . Harvest Chaurus Eggs if desired ( there are several hundred available here , as the area is a Chaurus nest ) , and continue to explore , dealing with more chaurus along the way . Next will be a large cavern with stalactites , several chaurus , and a Chaurus Reaper . The Chaurus Reaper must be killed before one can exit the abyss , and can be difficult for lower - leveled players , and is guarded by at least one chaurus . When killed , the Chaurus Reaper will have Habd ' s Remains ( necessary to gain the power Sailor ' s Repose ) , as well as Habd ' s Lighthouse Key . The final objective : Habd ' s last request . With Habd ' s Remains in hand , continue forward to a trail that leads up along a ledge that leads back to the opening of the abyss . There is a Falmer chest on the pathway . At what looks like the end of the path , jump down to end up in the first room entered when exploring the abyss . Return to the lighthouse cellar , go upstairs ( watch out for the bear trap , as it is now reset ) , and pick the lock the other wooden door , which leads to the top of the lighthouse . There , climb the ladder that leads to the pot of fire , and activate it . The activation of the lighthouse torch will remove Habd ' s Remains from the inventory and give the Dragonborn the active effect : Sailor ' s Repose ( Healing spells cure 10 % more ) . Habd ' s Lighthouse Key is needed to open the chest that is on the roof of the lighthouse , and once this last task is undertaken the quest is complete .