Here’s Wright’s understanding of hell (The Epistles of Paul to the Colossians and to Philemon: An Introduction and Commentary © 1986):

Unless we are to rob human beings of all meaningful responsibility for their actions, and to underplay the utter holiness of God, hell must always be at least a possibility. The presence in the world of much dehumanizing evil – dehumanizing to its practitioners even more than to its sufferers – indicates clearly enough how we may understand it. . . . Those who choose to live without God will one day find that they have forfeited their likeness to him.