In most forms of Christianity, that is. Mahayana Buddhism is somewhat different. Here is a Chinese legend about a "harrowing of hell". From Wikipedia (Miaoshan is a form of Guanyin):
>>>A variant of the legend says that Miaoshan allowed herself to die at the hand of the executioner. According to this legend, as the executioner tried to carry out her father's orders, his axe shattered into a thousand pieces. He then tried a sword which likewise shattered. He tried to shoot Miaoshan down with arrows but they all veered off.
>>>Finally in desperation he used his hands. Miaoshan, realising the fate that the executioner would meet at her father's hand should she fail to let herself die, forgave the executioner for attempting to kill her. It is said that she voluntarily took on the massive karmic guilt the executioner generated for killing her, thus leaving him guiltless.
>>>It is because of this that she descended into the Hell-like realms. While there, she witnessed first-hand the suffering and horrors that the beings there must endure, and was overwhelmed with grief. Filled with compassion, she released all the good karma she had accumulated through her many lifetimes, thus freeing many suffering souls back into Heaven and Earth.
>>>In the process, that Hell-like realm became a paradise. It is said that Yama, the ruler of hell, sent her back to Earth to prevent the utter destruction of his realm, and that upon her return she appeared on Fragrant Mountain.
