No, it is ancient stonework.
Corroisive acid
Inca stonework is often described as incredible and even beyond the capabilities of ordinary native people. This is nonsense of course, since many "primitive" cultures managed to produce stone masonry of equal technical skill using the simplest of stone tools. Olmec, Aztec, Mixtec, Totonac and Zapotec stonework is no less remarkable.
The same people who built them. Mainly stone masons.
Some stonework is still visible.
The stonework of the Incas was remarkable for its precision, with stones fitting tightly together without the use of mortar. They incorporated intricate carvings and angles that have withstood centuries of natural disasters and weathering. The techniques used by the Incas in their stonework allowed their structures to endure earthquakes due to the way the stones were interlocked.
acid rain
Answer: Perch (=22 cu. feet or 0.7 cu. metre approx.)
S. K. Parker has written: 'Make-up, imposition and stonework'
Are you from chittenango middle school? Because this is part of our homework! Just go in our textbook silly!
Cody Macfie has written: 'Getting started with mortared stonework' -- subject(s): Stonemasonry
Yes the Inca were skilled at stonework. They could fit stone together without cement or mortar.