Of the previously mentioned river terraces, the one known as TT-4 is only visible near "Narros del Castillo" (Ávila). Terrace TT-3 is the best preserved of the lot; although its height on the bed of the stream is not constant, it clearly stands out on the floodplain. Terrace TT-2 is quite well preserved as well, although it has been more heavily sculptured by other small tributaries of the Trabancos River. By contrast, terrace TT-1 is greatly eroded; although some sections survive to the south of the municipality of "Alaejos" (Valladolid), they are very difficult to differentiate from the colluvium floor that covers the "Superficie de Alaejos". Entering into land in the municipality of "Pollos", the stream stops to form river terraces, cutting traversely and lowering enough (between 40 and 60 meters) to meet the terrace deposits of the Duero River.