A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 5 June 2012, looking over Cathedral Square with the Christchurch Cathedral, the Post Office Building and the Chalice visible.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 5 June 2012, looking over the Westpac Trust Building towards the Holiday Inn.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 5 June 2012, looking over Cashel Street where the Re:Start container mall now sits.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 5 June 2012, looking over Worcester Street with the Rendezvous Hotel visible in the middle and the Octagon Live Restaurant below.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 5 June 2012, looking over Madras Street with the High Street shops in the bottom left.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 23 December 2012, looking over Hereford Street with the BNZ Building almost demolished in the centre left.
A map on a car's GPS unit warns of multiple road works across the city.
Photograph captioned by BeckerFraserPhotos, "Ross Becker ready to go flying. Three cameras with different lenses and his GPS unit".
Photograph captioned by Fairfax, "Tim Stahl from Canterbury University maps the fault line west of Rolleston with GPS equipment after Saturday's earthquake".