7JQX+RX Osovnica, Belarus
The memorial is located in the middle of a field, which is not so easy to access. The search is complicated by the fact that the arc point is situated in a sown field and is very difficult to notice. The locals, as a rule, do not understand what it is about at all. Your landmark is the triangulation point on the elevation in the field, east of the village of Osovnitsa.
The triangulation point in Osovnitsa, like all points in Belarus, is made in the form of a hollow metal four-sided pyramid. Nearby, an additional monument-stele is installed, made in the form of an obelisk 1.5 m high, on the top of which stands a 100-kilogram "earth" sphere with the outline of Belarus.
The Struve Arc, once known as the "Russian" and later the "Russo-Scandinavian Meridian Arc," is one of UNESCO's World Heritage monuments. The arc consists of 265 triangulation points, along which measurements were conducted from 1816 to 1852, allowing the exact size and shape of the Earth to be determined.
The reference points of this triangulation network were marked on the ground in various ways: hollows carved into rocks, iron crosses, stone pyramids, or specially installed obelisks. Often they were marked with sandstone bricks laid at the bottom of a pit; sometimes it was a granite cube with a cavity filled with lead, placed in a pit with cobblestones.
During the work on the project to include the Struve Arc in the UNESCO list, which lasted 8 years, special search and geodetic works were carried out in each country to find the original points. All information from all the countries of the Struve Arc was collected, structured, and standardized.
Not all of the original points were found during the special search and geodetic works carried out in recent years with the active cooperation of scientists from interested countries, and, moreover, many of them turned out to be heavily damaged. Therefore, only the best-preserved points—a total of 34—were included in the World Heritage site.
Sources:
http://www.gototrip.com/publications/geodezicheskaya-duga-struve
http://struve.by/index.php/belarus/punkty-dugi-v-belarusi/punkt-dugi-osovnitsa
