Continuously operating GNSS station or CORS site. Mark is unable to be physically occupied. Horizontal reference point is the centre of 5/8" thread. The vertical reference is the plate at top of short pillar. 0.055m spacer is between GNSS antenna reference point (ARP) and vertical reference plate (antenna height). In the same horizontal position as SCO1 (GPS SITE 1990). For more information see http://www.linz.govt.nz/positionz