The Bulgarians is a Bulgarian documentary, one of the most expensive modern television projects, which aims to reveal the origins of the proto-Bulgarians and their ancestral homeland. A team led by journalist Plamen Petkov travels more than 30,000 km in search of hidden and unknown facts from the proto-Bulgarians' past, describing a story quite different from the one presented by science. The TV crew traveled by car from Bulgaria to Siberia, Altai, Tianshan and the Pamirs, to the borders with Mongolia, China and northern Afghanistan. In 2007 a book entitled "The Bulgarians" was published, which is a continuation of the series.