He regains his senses in the underground prison.

意识回复的时候他已经在地牢里了。

youdao

Thus with Cenarius' help Malfurion sealed Illidan within a vast underground barrow prison there to remain chained and powerless until the end of time.

这样，在塞纳留斯的帮助下，玛法里奥将伊利丹封印在一个巨大的地下兽穴监狱中，丧失了法力的他将被永远的锁在那里，直到时间的尽头。

youdao

Myths that particularly rile prison officials are reports that Supermax, southwest of Colorado Springs, is a dungeon where inmates are cast aside to rot and die, and that the prison is underground, which it obviously is not.

CNN: Reporters get first look inside mysterious Supermax prison

Mr Cortiglia has pledged to introduce free weekend travel on the Underground and a minimum five-year prison sentence for knife crime if elected mayor on 3 May.

BBC: UK Politics