About 10km north of Arica, the Panamericana intersects paved Chile 11, which ushers traffic east up the valley of the Río Lluta to Poconchile and on to Putre and Parque Nacional Lauca. The road features a clutch of worthy stops, if you want to break up the journey. Note that this heavily trafficked winding route toward La Paz, Bolivia, gets about 500 trucks per day.
Beyond Copaquilla, paved Chile 11 climbs steadily through the precordillera toward the altiplano proper. If you're driving, the Aymara farming village of Socoroma on the colonial pack route between Arica and Potosí is worth a quick detour. To see its cobbled streets, a 17th-century church that's currently being restored, bits of colonial remains and terraced hills of oregano, take the serpentine road that descends from Chile 11 for 4.5km.