Many New Zealand rivers carry large rounded boulders of greywacke, derived from the nearby mountains. This forms a ready supply of material for building, given the trade name of roundstone. This wall in Upper Hutt is a typical example.
Te whakamahi i tēnei tūemi
Photograph by Simon Nathan
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.