Investigation in the Rio Tirón Valley
In contrast to the Najerilla valley, which was an economic and political center in the Roman period and for much of the Middle Ages, the upper Tirón valley is much less understood. The main evidence for Roman settlement comes from the incorporation of early Roman grave stelae and architectural fragments into the later Iglesia de la Asunción in the town of San Vicente del Valle. The sheer number of reused pieces is rather unusual in any period, particularly in an area with no known nearby Roman settlements; the nearest Roman site is near the modern town of Belorado, some 12km away. The relationship of the Iglesia de la Asunción, which is of early medieval date, to nearby settlements is also poorly understood. Documentary evidence indicates a number of sites in the area, including an early shrine to St. Vincent, whence the town and valley get their names.