Damage to SH2 through the Waioweka Gorge, caused by Friday's heavy rainfall, has to be seen to be believed, according to witnesses.  NZTA says it will take weeks to repair. Photo / Joss RuifrokDamage to SH2 through the Waioweka Gorge, caused by Friday’s heavy rainfall, has to be seen to be believed, according to witnesses. NZTA says it will take weeks to repair. Photo / Joss Ruifrok