dnd 5e - What is the nature of Tiamat's imprisonment ...
Tiamat lives in . Avernus, one of the Nine Hells. Specifically, she lives in her temple there, at liberty to move about Avernus. She is not, as you wondered, literally chained to a spot in the Nine Hells. However, events of the recent past (read: 4e -> 5e, so we've got to undo Sundering and Upheaval!) mean that
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