Vale da Grade Geodetic Marker

Vale da Grade 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° 32' 17.8801" N, 08° 08' 55.2226" W (37.53830003, -8.14867294). RGN identification: 1:50,000 sheet 45D, order 2, type BOLEMBREANO S/ MOINHO.

Altimetry: orthometric altitude at the top 297.48 m; at the base 291 m; ellipsoidal altitude at the top 351.94 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-45d-vale-da-grade