Quarrying in Wainuiomata has been limited to rock and sand extraction. Large boulders were extracted from Turakirae Head on Wainuiomata’s south coast to help construct the Wellington Urban Motorway and sand and gravel extraction was used in concrete of which was used in many construction sites in Wainuiomata.
Boulder Extraction
In the 1960s, large boulders were extracted from Turakirae Head on Wainuiomata’s south coast to support the construction of the Wellington Urban Motorway. This major infrastructure project required significant quantities of durable rock for stabilisation and road foundations. Turakirae Head, known for its rugged coastline and uplifted marine terraces, provided an accessible source of the hard rock needed for such large-scale construction.
The extraction process involved removing boulders from the coastal area and transporting them to motorway construction sites. While this contributed to the development of Wellington’s transport network, the removal of natural materials also had environmental consequences. Turakirae Head is an ecologically and geologically significant site, with ancient earthquake-raised shorelines and important wildlife habitats, including a fur seal colony. Over time, concerns about the impact of rock extraction in such areas have led to increased environmental protections.
Today, Turakirae Head remains a protected area managed by the Department of Conservation, recognised for both its geological history and biodiversity. The history of boulder extraction from the site reflects a period when infrastructure needs often outweighed environmental considerations. However, modern conservation efforts now ensure that such significant natural landscapes are preserved for future generations.
Sand and Gravel Extraction
Sand and gravel were historically extracted from the beach on Wainuiomata’s south coast. However, extraction ceased approximately 25 years ago, ending the practice. These materials have long been essential to the construction industry, playing a crucial role in concrete production, road foundations, and building projects. Aggregates like sand and gravel are typically obtained through mechanical mining or dredging. Sand is especially important in the production of cement and asphalt, while gravel is widely used in road construction, drainage systems, and landscaping.
Credits
Special thanks to Lance Stewart for some information in this article.
