One lane has now been opened on SH2, Karangahake, where a serious crash occurred earlier this afternoon.
One person reportedly sustained serious injuries.
Traffic control remains in place and Police have thanked motorists in advance for their patience.
Few details were immediately available on the crash in the Karangahake Gorge but "initial indications are that there have been serious injuries", police said.
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Advertise with NZME.The former gold mining area alongside the Ohinemuri River is popular with weekend walkers and explorers.
Police were called to the crash on State Highway 2 near the intersection of School Rd,at 2.20pm.
The highway was closed, which meant a diversion involving significant additional travel time for anyone driving through the area, police said.
"Motorists are advised to avoid the area and consider delaying travel, if possible."
