This path to Lake Gault seems not to exist anymore, there is only a bench and a fence.

The path starts in the forrest:
https://www.doc.govt.nz/parks-and-recreation/places-to-go/west-coast/places/westland-tai-poutini-national-park/things-to-do/tracks/lake-gault-track/

via StreetComplete 57.4