Tuesday, 5 July 2016 6:13 p.m.
On a ridge above Henry Couch's home sits a row of 17 square concrete blocks, each weighing 2.25 tonnes.
They look heavy, like nothing would move them.
"They've got to be," Couch said.
His property is one of 11 in the marae-based community of Rapaki, in Lyttelton Harbour, red-zoned because of the risk of rock fall. In the February 2011 earthquake, boulders rained down from the hill above the settlement. One, the size of a car, left a gaping hole in his nephew's house. T ...