What is the name of the founder of the famous chain of survey triangulations stretching from Hammerfest to the Black Sea?
Tartu Observatory The Tartu Observatory (Estonian: "Tartu Observatoorium" ) is the largest astronomical observatory in Estonia. It is located on the Tõravere hill, about 20 km south-west of Tartu in Nõo Parish, Tartu County. The old Tartu Observatory located in Tartu city centre, is known internationally for its connection to Friedrich Georg Wilhelm von Struve and the Struve Geodetic Arc, of which it is the first reference point.
Vitus Bering Vitus Jonassen Bering (baptised 5 August 1681, died 19 December 1741), also known as Ivan Ivanovich Bering, was a Danish cartographer and explorer in Russian service, and an officer in the Russian Navy. He is known as a leader of two Russian expeditions, namely the First Kamchatka Expedition and the Great Northern Expedition, exploring of the north-eastern coast of the Asian continent and from there the western coast on the North American continent. The Bering Strait, the Bering Sea, Bering Island, the Bering Glacier and the Bering Land Bridge were all named in his honor.