Valongo Geodetic Marker

Valongo 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: 39° 29' 53.4767" N, 07° 43' 4.7668" W (39.49818797, -7.71799078). RGN identification: 1:50,000 sheet 28B, type PILAR PRISMÁTICO S/ BASE PRISMÁTICA.

Altimetry: orthometric altitude at the top 299.31 m; at the base 296.51 m; ellipsoidal altitude at the top 354.33 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-28b-valongo