Local runanga have halted slip-clearing operations on earthquake-damaged State Highway 1 and the rail link north of Kaikoura.
Concern about potentially exposing or damaging cultural sites stopped helicopter sluicing work at Ohau Point, on Thursday.
The work was being carried out following the 7.8 magnitude quake which has cut off Kaikoura from the north and south.
Concerns were raised by the cultural monitor mandated by the local runanga, NZ Transport Agency Kaikoura earthquake recovery manager Steve Mutton said yesterday.
As a result, NZTA's contractor Downer stopped the three-helicopter operation about 4pm on Thursday.