A new slip has closed State Highway 6 between Fox Glacier and Franz Josef, close to where another slip closed the road earlier this month.
Photo: Supplied / NZTA
The Transport Agency said contractors had checked the damage and work to clear the slip would begin first thing in the morning.
No detour is available.
Earlier this month, a slip blocked SH6 south of Haast, trapping about 600 tourists in the town.
