In his millennial collection District and Circle (2006), Seamus Heaney circles backward in time to recover memories of previous poems and the districts of his rural Irish childhood: Mossbawn, Anahorish and Moyulla. The desire to renew one’s attachment to a district arises in part as a response to the scale of dislocation caused by 9/11 and global terrorism. Like the District and Circle lines of the London Tube, the journey he takes is both linear and circular – a downward spiral in the manner of Dante’s pilgrim. Thus Heaney’s collection exemplifies, with brilliant and beautiful economy, how the ancient genre of a descent to the underworld still serves to frame and make sense of individual experience …
Falconer, Rachel. "District and Circle". The Literary Encyclopedia. First published 22 March 2014; last revised .
[http://www.litencyc.com/php/sworks.php?rec=true&UID=30917, accessed 25 May 2015.]