To reach Skuldafn in "The Elder Scrolls V: Skyrim," you must first complete the quest "The World-Eater's Eyrie," which is part of the main storyline. After defeating the dragon at the Throat of the World, you can access Skuldafn by using a portal created by Paarthurnax. The location is primarily accessible during the quest, and you'll need to navigate through the associated challenges and enemies. Once inside, you can explore and progress through the quest objectives.
Dude look at the base of the claw in your inventory to see the code, if your too lazy then it is: Fox - outer ring Owl - middle ring Snake- lower ring
Krosis is at Shearpoint. Morokei at Labyrinthian. Nahkriin at Skuldafn. Otar at Ragnvald. Rahgot at Forelhost. Vokun at High Gate Ruins. Volsung at Volskygge. Hevnoraak at Valthume. Konahrik is only a mask. Can only be acquired when first 8 masks and wooden mask placed at centre of Labyrinthian.
Krosis is found at Shearpoint, which provides +20% lockpicking, alchemy and archery. Hevnoraak is found at Valthume. The wearer is immune to poison and disease. Morokei is found at the Labyrinthian during the College of Winterhold questline, which provides +100% magicka regen. Otar is found at Ragnvald, north-northeast of Markarth. Fire, frost and shock resistance is improved by 30% Nahkriin is found at Skuldafn, during the main questline, which provides +50 magicka and -20% restoration and destruction cost. Rahgot is found at Forelhost, south-east of Riften, which provides +70 stamina. Vokun is found at High Gate Ruins, west of Dawnstar, which provides -20% alteration, conjuration and illusion cost. Volsung is found at Volskygge, west of Solitude, which provides +20 carry limit, 20% better prices and underwater breathing. Wooden mask is found at the central barrow in the Labyrinthian, which makes a strange humming noise. Konahrik, the greatest mask, is found at the central barrow at Labyrinthian as well, but this time, you go to the broken shrine and put on the wooden mask. That shall teleport you to a new shrine. When you are teleported, click on each of the faces on the shrine, placing all of the masks onto the statues. The dragon in the middle should raise and reveal Konahrik. Konahrik has a chance to heal the wearer and attack nearby enemies when their health is low.
Taken from GameFront.comVolsung:Location: Volskygge, HaafingarDescription: To find the dungeon, search southwest of Fort Hraggstead and just north of Deepwood Redoubt in the Haafingar Hold. The dungeon has three parts - the Dragon Priest Volsung is in Volskygge Peak, the third part.Mask Stats: Light Armor, 23 Armor, 9 Weight, Value 4611, 20% better prices, water-breathing, and +20 to carry weight.Vokun:Location: High Gate Ruins, The PaleDescription: West of Dawnstar, east of Solitude, and north of Ustengrav. This dungeon featuresthree parts, with the third part containing the Dragon Priest Vokun. At the beginning of the dungeon, a companion named Anska can join you. If you're alone, bring her. Behind the Dragon Priest is another chamber containing a Word of Power.Mask Stats: Heavy Armor, 23 Armor, 9 Weight, Value 2182, and spells of Alteration, Conjuration, and Illusion are improved by %20.Otar:Location: Ragnvald, The ReachDescription: Search north of Markarth, down a deep path between two mountains. You'll find Otar in the Temple.Mask Stats: Heavy Armor, 23 Armor, 9 Weight, Value 1521, provides a 30% bonus to resistance against fire, shock and ice magic.Rahgot:Location: Forelhost, The RiftDescription: This location is southeast of Riften and west of Broken Helm Hollow, in The Rift Hold. You'll be sent here during the "Siege on the Dragon Cult" Quest, given by Captain Valmir.Mask Stats: Heavy Armor, Armor 23, Weight 9, Value 962, with a bonus of +70 to your stamina stat.Nahkriin:Location: Skuldafn, Other Realm (Only Attainable in the Other Realm, During The World-Eaters Eyrie)Description: This mask, so far, can only be accessed during the "World-Eater's Eyrie" main quest, late in the main quest string. There is also a Word of Power that can only be found during this quest, in the same area as the Dragon Priest.Mask Stats: Heavy Armor, Armor 23, Weight 9, Value 2173, Destruct and Regeneration Spells cost 20% less to cast, and the player is given a +50 bonus to Magicka.Hevnoraak:Location: Valthume, The ReachDescription: Search between Markarth and Falkreath, or southeast of Markarth.Mask Stats: Heavy Armor, Armor 23, Weight 9, Value 891, provides immunity to poison and disease.Krosis:Location: Shearpoint, The PaleDescription: Located on the Pale's southern mountains, north of High Hrothfar. What some say is the most difficult of the Dragon Priest dungeons, stay away from the dragon guarding the Word of Power when engaging the Dragon Priest Krosis. To location can be discovered by listening to guards in The Pale. The Word Wall here will teach all three words at once, for the "Throw Voice" shout.Mask Stats: Light Armor, Armor 21, Weight 5, Value 1615, gives you a 20% bonus to Lockpicking, Archery, and Alchemy.Morokei:Location: Labrynthian, HjaalmarchDescription: Find this location southeast of Morthal, and northeast of Drelas' Cottage in the Hjaalmarch Hold. You can find two Words of Power here, for Dismaying Shout and Slow Time. Inside, you'll find a circular pedestal with a Wooden Mask, equipping this mask sends you back in time, and allows you to place the eight Dragon Priest masks onto the pedestal. To find Morokei, you must acquire the quest from the College of Winterhold sending you out to find the Staff of Magnus.Mask Stats: Light Armor, Armor 5, Weight 4, Value 637, and your Magicka regenerates 100% faster.Konahrik:Location: Labyrinthian, HjaalmarchDescription: While picking up the Mask of Morokei, you'll enter Labyrinthian and see the circular pedestal with the Wooden Mask. Wearing the mask will send you back in time, and allow you to place all eight Dragon Masks on the eight statuettes. Placing all eight masks will reveal the Konahrik mask.Mask Stats: Heavy Armor, Armor 24, Value 3200, Weight 7, and a special enchantment called Konahrik's Privilege. When low on health, there's a chance to knock down enemies, grant a firecloak, or heal the weaer and anyone nearby. The enchantment will also rarely summon a spectral Dragon Priest ally.