The Botijas stream Nature · Olmos de Peñafiel, Campo de Peñafiel, Valladolid Image of Olmos de Peñafiel, not of the place itself. The 16.07 square kilometres of the municipal district gather at 782 metres in a valley closed by hills and watered by the Botijas stream, with patches of oak wood that survive among the tilled lands. Photo: Lourdes Cardenal (CC BY-SA 4.0) What to see and do in Olmos de Peñafiel