The Hornija river plain at Valdetronco Nature · Vega de Valdetronco, Montes Torozos, Valladolid Image of Vega de Valdetronco, not of the place itself. The river Hornija crosses here a flat and fertile terrain at some 708 metres of altitude, in contrast with the moorland that dominates it. That floodplain of good quality explains why the village carries the word vega in its name and why it yielded cereal, wine, pulses and pastures. Photo: Juanessunombre (CC BY-SA 4.0) What to see and do in Vega de Valdetronco