Here is a picture of a remnant section of the water race that runs roughly parallel with the current track up the TL of the Arahura River from the Cess Pool to not far below Lower Arahura hut. Sections of this race which is just over 25km long were constructed between the early 1880's & early 1900's with the newest section being the LA hut end. (I picked up an old bottle that dates from 1898 close to where the photo was taken & it would have been taken there during the construction or surveying phase)

Below Lower Arahura hut the current track is on an old "miners" track some of the way. Other bits, generally those that have eroded the worst, are on a different line put in by a digger (& bulldozer?) in the 1980's. So in places there are three tracks. 1/ The currently maintained track where it is not on the line of the prospectors track 2/ The prospectors track that went thru to the Browning Pass. (Started in the 1860's & upgraded in 1887) & 3/ The water race maintenance track c.1900