The magnitude 7.1 Christchurch earthquake broke off an enormous chunk of Castle Rock in the Port Hills which has tumbled down towards the Lyttelton tunnel.
View from Morgan's Valley (-43.578037° 172.714828°).
Photos of Christchurch City LIbraries Outreach staff working in welfare centres following the February 22 earthquake.
File ref: CCL-2011-02-27-OperationStoryTime-tumble-tower
From the collection of Christchurch City Libraries