Correction: Identifying anthropogenic features at Seoke (Botswana) using pXRF: Expanding the record of southern African Stone Walled Sites - Stefano Biagetti; Jonas Alcaina-Mateos; Abel Ruiz-Giralt; Carla Lancelotti; Patricia Groenewald; Jordi Ibañez-Insa; Shira Gur-Arieh; Fred Morton; Stefania Merlo (PLoS ONE, 2022)