CUEVA DE SIETE ALTARES (R)
In the sickles of the river Duratón, near Sepúlveda one finds this eremitorio created in the 7th century by San Frutos and his brothers, missing person during the Arabic invasion. It was consisting of a public exterior, semiexcavated chapel, with an altar in the shape of horse-shoe. Entering a great arch, nowadays in very poor condition, another zone exists, with three excavated altars, also in the shape of horse-shoe, for use of the monks and more to the bottom the cells of the monks.
For more information see your description at Condado de Castilla