Complex sentence: In ancient times the effort would have been a form of tax, with participants coerced to perform the rebuilding; nowadays the builders have indicated that effort is performed to honor their ancestors and the Pachamama (Earth Mother).
Split into simpler sentences: In ancient times the effort would have been a form of tax, with participants coerced to perform the rebuilding. The builders have indicated that effort is performed to honor their ancestors and the Pachamama (Earth Mother).