Stonehenge — the most famous of the megaliths — for centuries stirred the imagination of people. But thousands more not less mysterious prehistoric stone “sphinxes”, is puzzling to the researchers, scattered around the world. Many of these mysterious structures and on the territory of Russia. Alexander Gay, a prominent Russian expert on Eneolithic and bronze age in South-Eastern Europe and the Caucasus, I am sure: there is not enough for one generation.
What are the megaliths and how they differ from each other?
Constructions from huge stones, slabs and blocks were erected by different peoples and in different epochs. The pyramids of Egypt or the temple in Belbek — also megaliths. Just call them so is not accepted. Megalithic research and in wide use called, usually stone monuments of prehistoric peoples who have not reached the level of barbarity or civilization.
In France, on the Atlantic coast — the whole field from thousands of these megaliths, built in parallel rows for miles. In addition, the megaliths are of different types: Nordic seids, the Nuraghe of Sardinia, the Atlantic corridor of the tomb of Europe, which is often now called in Breton Karami; menhirs — standing stones-stelae; stone circles — stone circles; dolmens — tombs with pillars or walls of verticalnaya, usually covered with a flat roof. Continue reading
Some species are solitary insects that build shelters for themselves and their offspring, live in the soil. This is due not only the development of certain building instincts, and the appearance of specific morphological structures. In this respect, the remarkable mole cricket. Their front legs turned into a typical digging organs with which insects perform a large amount of excavation. Suffice it to say that the ordinary mole cricket prokativaet underground a network of branched passages at a depth of 10-20 cm in the summer and in the winter deepens to 1 M. With this activity of mole crickets is associated with its Latin name, which translated into Russian language means “cricket-mole”.
Many species of wasps construct few combs. They are often located in tiers one under the other. In this case, the first is based top cells. As more families and expanding the nest to the first cell using the legs is attached the second hundred, etc. the Nesting structure of this type is characteristic of the genera spring, parvispora, polybia, etc. Some intermediate position between single-stage and multistage arrangement of cells is the nesting design of the concentric type, such as, for example, OS nectarine, inhabiting the tropical parts of South America. Honeycombs in the nests of these wasps have an Orb C shaped. The cells are strengthened on the common base constituting the spiral sakrusenergo nests. Continue reading
The Gothic quarter of Barcelona . located in the historical and geographical center of the capital of the Autonomous region of Catalonia, in plan is a rectangle with sides approximately 1.2 0.5 km From the East his limits Laetana street, from the South-West of the Ramblas, towards the North-West boundary adjoins an area of Catalonia, the South-Eastern coast is washed by the Mediterranean sea. Here is concentrated the political, cultural, and tourist life in Barcelona: in St. James, seat of the city government and the provincial churches, restaurants and open air musicians, singers and dancers. Thousands of tourists are dissolved in the narrow streets of the medieval quarter, visit the museums, stay for a long time in stores and have a rest after a successful shopping spree in a cafe.
How built up the quarter
Not all objects of the Gothic quarter appeared here in the Middle ages, in the heyday of the Union of the States of the Aragonese crown, an important part of which was the Principality of Catalonia. Continue reading