5. Stone Age Tunnels on the whole territory from Scotland to Turkey below the remains of many Neolithic settlements, archaeologists have discovered an intensive network of underground tunnels. Depths vary from two, 300 feet (700 m) in state (Germany) to one, 200 feet (350 m) in European country, a testament to the exceptional attainment of Neolithic builders, as most of the tunnels have survived nearly in their original type despite their extensive age of twelve, 000 years. though not all tunnels have structural connections, specialists believe that their main purpose was to alter folks to maneuver safely through the world no matter the extent of external danger. additionally, within the tunnel system, special rooms are created - presumably used as storage facilities and bunkers.
6. wildcat Punku wildcat Punku is one in all the four structural parts (building complexes) of the traditional Daugava town of Tiwanaku in South America. The age of the monument advanced remains a subject matter of spirited dialogue, because the ruins were repeatedly "raided" by marauders and amateur archaeologists - something that would shed lightweight on the mystery of wildcat Punku was either destroyed or purloined. Scientists agree that the advanced is way older than the Egyptian pyramids, thus it"s concerning 15000 years recent. Even Incas failed to possess comfortable data concerning this object. On the huge stone blocks used for the erection of buildings, there"s no trace of contact with any building tool; additionally amazes however exactly blocks are adjusted to every different. This information testifies to the high level of talent and information within the field of stone process, engineering technology, and pure mathematics. the town additionally had an associate degree irrigation system, a water-proof sewerage system and a fancy of hydraulic mechanisms. Since scientists haven"t been ready to notice any proof to tell US concerning the inhabitants of the town, the extent of technological development remains one in all the foremost intriguing secrets.
7. Metal clamps In continuation of the story concerning wildcat Punku, we are going to tell concerning one intriguing detail - metal clamps, wont to connect giant structures (monuments of the Inca culture of Korikancha, Olantaytaymbo and Yurok Rumi, likewise as ancient Egyptian temples). The grooves and holes found throughout the excavations were, in keeping with scientists, wont to transport metal tools; but, the experts" analysis showed that liquefied metal was poured into the excavations, that the builders had the chance to use moveable melting mills. additionally, terribly high temperatures were needed for the melting of the metals used throughout construction work - to the most effective of our information, such technologies weren't renowned to group at that point (at least till recently). we will solely guess why these technologies were eventually forgotten (assuming that the new civilization merely unnoticed the information and achievements of the previous one).
8. Baalbek the traditional Lebanese town of Baalbek is one in all the most effective preserved monuments of Roman culture within the world. called Heliopolis in times of yore, it amazes with its loftiness and complexness. however scientists are rather more involved not concerning Heliopolis, however, concerning the ruins of the monument advanced found below the muse of the town. The found blocks weigh not but 1200 tons every ar the biggest camp-made stone structures within the world. Archaeologists date the ruins of the ninth millennium B. C. as a result of artifacts of the center (1900-1600 B. C. ) and Early (2900-2300 B. C. ) Bronze Age were found within the higher soil layers. it"s not possible to elucidate however the fabric for construction was delivered to the region from the mining site; architects and engineers say with one voice that {there were|there are} no technologies that would have been wont to elevate the large stone blocks throughout this era (among the arguments given ar the placement and restricted area for the employment of such mechanisms). However, none of the fashionable construction technologies will give a transparent answer to the current question.