Villagers take part in a bathing ritual at the Bodo river in Kanga Nianze village, built near a former slave route that was used by slaves to take a last bath before being loaded onto slave ships, Tiassale, Ivory Coast, July 21, 2019. The 400-year anniversary of the first slave boat to arrive in America from Africa has caused a rush of interest in heritage tourism in West Africa, as ancestors go back to ancient sites to delve into a dark and often hidden past. Picture taken July 21, 2019. REUTERS/Luc Gnago