JCMH+QJ Paliepiukai, Vilnius District Municipality, Lithuania
The geodetic point BERESNÄKI, Paliepiukai Nemežis is located in the village of Paliepiukai, Vilnius district, Nemežis eldership, approximately 5 km east of Nemežis. This point was established between 1816 and 1821. The point was marked with field stones that were fastened together and placed in a pit. Polish surveyors re-marked the point with concrete blocks between 1925 and 1930. In 1992, a modern monument was installed at the point. The mark itself is currently invisible to the naked eye, as it is hidden under a metal cover, which is also surrounded by a white concrete fence.
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, through which measurements were conducted from 1816 to 1852, allowing the precise determination of the Earth's size and shape.
The reference points of this triangulation network were marked in various ways on site: 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 project to include the Struve Arc in the UNESCO list, which lasted 8 years, special search and geodetic work was undertaken in each country to locate the original points. All information from all the Struve Arc countries was collected, structured, and standardized.
Not all of the original points were found during the special search and geodetic work carried out in recent years with active cooperation from scientists of the interested countries, and many of them were found to be heavily damaged. Therefore, only the best-preserved points—34 in total—were included in the World Heritage site.
Sources:
http://www.gototrip.com/publications/geodezicheskaya-duga-struve
