Lake Ngarotoiti is a peat lake situated near Ohaupo, South of Hamilton. The lake once drained to Lake Ngaroto to the south, but to stabalise Ngaroto lake levels the Ngarotoiti flow was diverted (www.landcare.org.nz).
Main image by David G. Schmale III, Virginia Tech, https://www.schmalelab.spes.vt.edu/