These are located behind the village of Enfield in a disused quarry which has more recently been used as a landfill site. This site is fenced off to the public. You can however view the Geosite from behind the gates.
The quarry exposes several near-vertical dikes. Dikes are formed when volcanic activity pushes magma up through a crack or a weakness in the crust. This magma cuts across older material and cools in place as an igneous intrusion (i.e. it cools and ‘sets’ below the surface).
Follow the Weston-Ngapara Rd from Weston towards Enfield for 6km. Just before the township of Enfield, park your car in the parking bay on the left and follow the signage.