La Hastiala and the mountains of Monsagro Nature · Monsagro, Ciudad Rodrigo, Salamanca Image of Monsagro, not of the place itself. The municipal district reaches into the natural park of Las Batuecas-Sierra de Francia and culminates in the peak of La Hastiala, of 1,735 metres. The river Agadón runs through it among chestnut and oak woods, at the contact between the Campo de Robledo and the sierra. Photo: Toprural, on Flickr (CC BY-SA 2.0) What to see and do in Monsagro