There is a glitch in Skyrim where the player can pass through walls using kettles. All that has to be done is to pick up a kettle, and then walk or run into a wall. This can be used to leave cities without NPC's or certain graphics loading, walking underneath the map, and more.

If used in the city of Whiterun, it is possible to find a chest underneath Skyforge. This chest contains armor, gold, ingots, and ore.
Contributed by Arachnus