Question: What ancient geoglyphs were studied by Nicholas J. saunders?
Sentence (from "Nicholas J. Saunders"): In addition to his research specialising in the anthropology of 20th-century conflicts and the archaeology of World War I theatres in Belgium, France and the Middle East, Saunders has also conducted extensive fieldwork and research in pre-Columbian and historical archaeology of the Americas.
Relevant evidence: No