Cidhna Mine

Description
Cidhna Mine is a prison in Markarth. It is run by the Silver-Blood Family who use prisoners to mine silver ore inside. It is also home to Madanach, the King in Rags, leader of the Forsworn Rebellion. It is referred to by many as the most secure prison in Skyrim.

Contrary to popular belief, it is possible to escape Cidhna Mine using a glitch. If you push the cart found near Duach into the corner of the wall that leads to the dead end, you can fall through the map and land on the other side of the door you originally enter with. You can outrun the guards, or you can kil them with magic through the side of the door. Once you leave he mine the Markarth Guards will not be hostile.

Interactions
Margret, an undercover operative of the Imperial Legion, was sent to Markarth by General Tullius to retrieve the deed to the mine. The Legion feared the Forsworns and Silver-Bloods were Stormcloak sympathizers, who wanted to exploit the violent criminals imprisoned in the mine and use them against the Empire.

While investigating the Forsworn Conspiracy, at the bequest of Eltrys, the Dragonborn is either imprisoned here, framed for murdering several notable members of the Silver-Blood family, or infiltrates the mine intentionally, hoping to meet Madanach and disable Forsworn influence over Markarth.

Combat
Finding a shiv, wielding a pickaxe, or using spell to attack any of the inhabitants of the mine provokes everyone nearby to relentlessly strike-back at the Dragonborn. Sneaking or Invisibility effects allow picking off the inhabitants easier, as the Dragonborns lack of armor, accessories, and strong weapons leaves him or her vulnerable to multiple attacks.

Notable loot
Proper Lock Design skill book - In the normally acessible part of the mine.

Notable inhabitants

 * Madanach
 * Urzoga gra-Shugruz
 * Borkul the Beast
 * Uraccen
 * Grisvar the Unlucky
 * Braig

Quests

 * The Forsworn Conspiracy
 * No One Escapes Cidhna Mine