In this Tuesday, Sept. 11, 2018 photo, Jesus Luis Remiro, left, picks up charcoal with his brother, Salvador Remiro, and Jose Mari Nieva, center, as part of a process to produce traditional charcoal in Viloria, northern Spain. Only a handful of professional "charcoal cookers," which is how locals call the backbreaking and patience-exhausting process of turning firewood into lightweight pieces of carbon, remain active in Spain's northern Basque valleys. (AP Photo/Alvaro Barrientos), APTOPIX