Nick, that appears to be from Terrys first NZ visit, at Easter 1970. The Terry Marshall black and white photo shown earlier in this thread is from his second visit, at the big Labour Weekend event in October 1970 when the car had mechanical failure very early in the weekend. And yep, you're correct, its Bay Park, exiting the hairpin, which was the only right hand turn on the track. That was a popular spot for photographers, as the cars would tend get sideways exiting.