A schoolgirl takes notes as she prepares her presentation during her school's visit at the 'Maison Des Esclaves' slaves' house, a gathering point where slaves were shipped west in the 1700s and 1800s, at Goree Island off the coast of Dakar, Senegal July 12, 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 12, 2019. REUTERS/Zohra Bensemra