The terraces were everywhere, even up the steep sides of the Huayna Picchu - and all for drainage?
They were also used for agriculture but the amazing thing was, each of them were layered with stones at the bottom, then gravel, sand and topsoil. The drainage enabled the rainwater to go through and therefore stopped erosion. The Incas were incredible engineers!
All these mortarless stone masonry here were also earthquake proof because mortar would crack when the earth moved. Without mortar and with the stones fitted neatly into each other, when there was an earthquake, all the stones shook in their spots but would settle back down. Machu Picchu is in an earthquake zone, sitting on two faults, yet it survived centuries of earth movements. Astounding!
|
No comments:
Post a Comment