Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Historic Sanctuary of Machu Picchu' has mentioned 'Soil' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| These terraces were a work of considerable engineering, built to ensure good drainage and soil fertility while also protecting the mountain itself from erosion and landslides. | WIKI |
| Excavation and soil analyses done by Kenneth Wright[26][27][28] in the 1990s showed that the terraces were built in layers, with a bottom layer of larger stones covered by loose gravel. | WIKI |
| It was shown that the topsoil was probably moved from the valley floor to the terraces because it was much better than the soil higher up the mountain. | WIKI |
| However, it has been found that the terrace farming area makes up only about 4.9xc2xa0ha (12 acres) of land, and a study of the soil around the terraces showed that what was grown there was mostly corn and potatoes, which was not enough to support the 750+ people living at Machu Picchu. | WIKI |