Complex sentence: The 13th World Jamboree was held August 2--10,1971, on Asagiri Heights on the western side of Mount Fuji, near the town of Fujinomiya City, Japan, approximately 80 miles southwest of Tokyo.
Split into simpler sentences: The 13th World Jamboree was held August 2--10,1971. It was held on Asagiri Heights on the western side of Mount Fuji, near the town of Fujinomiya City, Japan, approximately 80 miles southwest of Tokyo.