We took the below route in showers, with a cloud layer at 1400. Above 1400 it was approx 50m of visibility & gusty. At 1600 it was a gale and rain and almost no vis.
What is the correct way up out of the stream onto the ridge at 1301? From the stream the only way up onto the plateau was a near vertical ~40m climb. It was pretty dodgy climbing, pulling on rotten branches & loose plants.
The stream chasm draining 1627 was uncrossable. There was also 3-4 other small chasm's before it that were a major pain to cross - and not represented on the topo.
Once we got to 1677 we couldn't see a thing and bailed down to 1421 as soon as we could to avoid the million knots winds & sideways rain.
In hindsight, I wish we had stuck on the ridge and just gone straight down to Camerons Hut. Our route to the walkwire was a complete bush bash and mostly sucked as the ridge kept wanting to push us off to Cameron Steam.
I see Neil Sloan and a fellow, Steve, did the ascent out of the Sth Hurunui as part of their horrendous scrub-bashing, gnarly tops travel circuit involving the Crawford Range recently that biship posted https://get.google.com/albumarchive/100895717774510695568/album/AF1QipM1TqN1iCU47GEKWDx0E_kZJScZI8kpFh3qCGzW. He took a really good series of photos and those chasms were mentioned!
It looks as if they accidently went up the wrong stream, which made them climbed a few hundred m more than planned:
They intended to try to get onto the the platau where we did, on the other side of the chasm:
In the Upper South Branch Hurunui Hut about every 10th hut book entry was 'Came in from Camerons Hut', so either it's a doddle, or there's a known route - which I can't find anywhere.