Complex sentence: The summit of Cerro Baúl is located in the Moquegua Valley, both Cerro Baúl and the adjacent Cerro Mejia were under Wari control.
Split into simpler sentences: The summit of Cerro Baúl is located in the Moquegua Valley. Both Cerro Baúl and the adjacent Cerro Mejia were under Wari control.