This is the second bivvy on-site. It was built in 1984 by the NZFS for $2903 & it was the last biv built by the NZFS in Westland. A couple of small tarns on the Mungo side of the ridge provide drinking water & there is no toilet. It was repainted in March, 2013. It is a replacement for the earlier B55 model. Edit Hut