This canyon is fully described in the Canyoning in NZ guidebook.
R1 is now double bolted (10mm stainless tru-bolts)
the R4 label is used twice, (once for the actual R4, and then for what should be R5). This might cause some confusion when reading the topo and the description.
The description (3 paragraph, page 405) should read:
“R4 has a ‘dry’ landing on a ledge, which can then be easily downclimbed. R5 has been slid on the TR, but the margins for a safe slide are very small. There is a very deep undercut on the TR of this pool, where the waterfall enters the pool. “
Below the real R5, there is now a single ‘belay’ bolt on the on the TL ! traverse to the J5m. This allows you to be on belay whilst traversing a slippery slope to the jumping point.