On February 22, 2011, the earth broke, ripping apart lives and wreaking havoc on Christchurch.
A by-product of the horrific devastation was a snapshot of an earthquake captured at a resolution that had never been seen by anyone.
"The earth actually gave us time to build GeoNet before the earthquakes started," seismologist Ken Gledhill, director of GeoNet, said as the hazard monitoring centre turns 15 years old this month.
"We know a lot about how the earth broke ... and learnt a lot about how we should plan."
The data rippled into building codes, influenced research across the globe and helped to understand what we needed.