Complex sentence: Among New World societies trepanning is most commonly found in the Andean civilizations such as the pre-Incan cultures, for example the Paracas culture Ica situated in what now is Ica located South of Lima.
Split into simpler sentences: Among New World societies, trepanning is most commonly found in the Andean civilizations such as the pre-Incan cultures. For example the Paracas culture Ica situated in what now is Ica located South of Lima.