A short drive beyond completes Bolivian entry and payment of the reserve fee for the Reserva Nacional de Fauna Andina Eduardo Avaroa. The reserve is named after Eduardo Avaroa, a soldier who became a national hero during the War of the Pacific — he died in 1879 defending the Río Loa crossing against Chilean forces, reportedly refusing to surrender. The war cost Bolivia its entire Pacific coastline. Crossing from Chile into Bolivia here carries a quiet historical weight that most travellers feel without quite knowing why. Keep your receipt; it may be checked later.