A man plays soccer on Goree Island off the coast of Dakar, Senegal, July 12, 2019. Goree island, a UNESCO world heritage site, was used as a slave gathering point from where slaves were shipped west in the 1700s and 1800. 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 descendants of slaves from America, the Caribbean and Europe visit ancient sites to delve into a dark and often hidden past. Picture taken July 12, 2019. REUTERS/Zohra Bensemra