Complex sentence: In 1967, he published the last book of his classic period, "South of Heaven", about a young migrant laborer working on an oil pipeline in Texas--although typically violent and bloody, it has a more optimistic tone than most of his work.
Split into simpler sentences: In 1967, he published the last book of his classic period, "South of Heaven", about a young migrant laborer working on an oil pipeline in Texas. Although typically violent and bloody, it has a more optimistic tone than most of his work.