João Velho Geodetic Marker

João Velho 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: 37° 31' 57.5006" N, 08° 38' 39.8084" W (37.53263906, -8.64439122). RGN identification: 1:50,000 sheet 45C, type BOLEMBREANO.

Altimetry: orthometric altitude at the top 138.9 m; at the base 137.1 m; ellipsoidal altitude at the top 192.89 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-45c-joao-velho