The 2.9-hectare burial mound is also known as the French tombs, the Swedish tombs, the tombs of Napoleon's soldiers. The burial mound consists of 32 sandstones. 5 burial mounds were excavated by Konstantinas Gukovskis back in 1895. In the course of these investigations, 5 horse skeletons with gooseberries and 1 cremated horse grave were found. In 1958 and 1978, the Institute of History of the Lithuanian SSR Academy of Sciences conducted archaeological excavations. During the archeological excavations it was revealed that some of the dead were buried under burial mounds, others in burial mounds. There have been cases where no burials have been found in burial mounds. The Salakas burial mound is a legacy of the Sėliai tribe dating back to the 9th-12th centuries. - the principles of the Late Iron Age burial. The burial ground belongs to the burial culture of eastern Lithuania.