Puerto de Tornavacas y nacimiento del río Jerte Nature · Tornavacas, Valle del Jerte, Cáceres Image of Tornavacas, not of the place itself. The Puerto de Tornavacas mountain pass links the provinces of Cáceres and Ávila; the river Jerte rises in the municipal territory, whose Garganta de los Infiernos gorge was declared a nature reserve in 1994. Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in Tornavacas