Machu Picchu is truly one of the wonders of the world. The spectacular ridge-top site of this city and the fine masonry of royal Inca buildings are stunning aesthetic and technical accomplishments. Early Spanish chroniclers reported "molten gold" was used as mortar during stone block construction, and a research paper by a chemist presents some intriguing insights.
Machu Picchu, the Inca citadel high on a ridge in the Andes Mountains, is one of the most impressive and widely recognized archaeological sites on Earth. Since I am fascinated by this spectacular place, I’ve written about it in several blog posts. In a new article I’ve focused on the geology – and this is posted on a website called "GondwanaTalks".
In the Andes Mountains of South America, the Incas and their ancestors invested enormous amounts of time and labor in the meticulous work of quarrying, transporting, and fitting together multi-ton stone blocks, or megaliths, for monumental construction projects..... The ancient Andean stonework is so impressive that many have found it difficult to believe that mere humans, who lacked draft animals and were using only stone-age tools, could be responsible for the construction.
Machu Picchu, the mountain citadel high in the Andes Mountains of Peru, is a familiar icon of the Inca Empire. Perched high on a steep and narrow ridge between two mountain peaks, the site is ringed on three sides by the Urubamba River, a dizzying 1,600 feet below.
Machu Picchu, the city built by the Incas on a steep mountain ridge, is a tremendous engineering achievement – and only one of many impressive constructions by the ancient Andeans. Among these is Chavín de Huántar in northern Peru, with a sprawling temple complex that was once the center of a powerful cult and an important pilgrimage site.
When I hiked to Machu Picchu along trails built by the Incas in the Andes Mountains, I was traveling on what was once part of the largest monumental system ever built in the ancient world [...]
I was finally on my way to the Inca citadel of Machu Picchu, fulfilling a longtime dream to see the Andes Mountains and the archaeological wonders of Peru. While hiking along the steep paths and [...]
Whenever I venture out in the world, I check out the rocks in my environment – they are all around us in natural outcrops or layered onto the buildings in our towns and cities. As [...]
In 2005, a friend invited me to join a group to hike for several days through the Andes Mountains to Machu Picchu, the world-famous Incan archaeological site. I was thrilled, and quickly accepted the invitation. [...]