Geograph - photograph every grid square

After NZ0812 : Passing the final island, Tees Greta, the river curves right, with cliffs to the left, and a blind bend ahead. Land right to inspect (a wise precaution if you haven't paddled the river before, and sensible if you have - trees can wash down and be a significant hazard here). An easy path leads through a gate and along the right bank to the photographer's viewpoint. On the river, there is a large rock just in the middle of the river as it turns the corner, which is passed on the left at low levels, and on the right in flood. A brief calm stretch then leads to a narrowing and steepening of the river in the rapid culminating in Hell Cauldron. In low water, this entails a couple of narrow chutes, then a fast schuss down a large slab and hopefully through the big standing wave that forms at the bottom. Seen here at a high level (1.25m on the EA gauge at NZ0312 : Rutherford Gauging Weir), the rapid is a continuous series of very big crashing waves, with a tendency to push the paddler towards the left, where the final wave (out of shot to the right) is definitely out to get you. Keeping some semblance of control early on enables one to push to the right through a curling stopper and reach a big eddy below, where swimmers and other debris may be retrieved.