Janus Geodetic Marker

Janus Geodetic Marker is a point in the Portuguese National Geodetic Network (RGN), the reference network used for mapping, surveying and geographic measurement in Portugal.

Coordinates: 40° 38' 30.5777" N, 08° 07' 14.2157" W (40.64182714, -8.12061547). RGN identification: 1:50,000 sheet 17A, type PILAR TRONCO-CÓNICO S/ CILINDRO.

Altimetry: orthometric altitude at the top 1047 m; at the base 1043.05 m; ellipsoidal altitude at the top 1102.65 m.

This record is based on official RGN coordinate data and is useful for understanding the landscape, planning map work or identifying a precise geographic reference point. Local access conditions can vary, so check the terrain before visiting.

RGN source ID: rgn-17a-janus