The Talegones and Parado rivers Nature · Arenillas, Berlanga, Soria Image of Arenillas, not of the place itself. Both watercourses cross a sandy municipal district of 30 square kilometres at 1,097 metres of altitude, with unirrigated dry farmland and narrow meadows where the poplar groves are concentrated. Photo: Rowanwindwhistler (CC BY-SA 3.0) What to see and do in Arenillas