Church officials say quake - damaged cathedral must be rebuilt . Walls to be raised to three feet and the base kept as a prayer garden . The Anglican Church says the cost to rebuild the cathedral is ' staggering ' The cathedral had survived five other quakes in its 131-year history .
Church officials say quake-damaged cathedral will be demolished . Walls to be reduced to three metres and the base kept as a prayer garden . The Anglican Church says the cost to rebuild the structure is 'staggering ' The cathedral had survived five other quakes in its 131-year history .