Santomanno holiday farm is situated on a hill (380m above sea level) overlooking a branch of the Tiberino lake, which stretches from the north to the south of Umbria.

Indeed it is easy to find fossils of Bovidae, hippos, European elephants and Rhinos, dating from the Plio-Pleistocene period, located on the southwest side of the hill, which slopes into a basin of fluvial-lacustrine origin.

The hill is surrounded by the Martani mountains which are the internal chain of the Appennines dividing the region of Umbria from Marche.

The valley is filled by sediments of lacustrine origin - known as VILAFRANCA - deposited in the period between the middle Pliocene (Tertiary era) and the Pleistocene (Quaternary era) (5 / 4 million years ago).

As confirmation of this, a fossil forest in Dunarobba was recently discovered - paleontologically unique in the world for its consistency: there are fossil redwoods of a luxuriant forest which are similar to the current ones.

The GREGORIAN cadastre gives historical evidence of a church dedicated to Saint Umano in Quadrelli which dates back to the year 1400

The church was part of the county of Quadrelli where ruins of the town of CARSOLI were located.

Rev. Alalleoni, pastor of S. Niccolò in Quadrelli, started to build the church on March 24th 1455.

It was a subsidiary church of the Priory of S. Erasmo at the fortress of Cesi which depended on the Abbey of Montecassino. Later it was united to the Church of San.Cecilia in 1592 and exhibited in January 1596.

In 1546 the Governor of Todi condemned Vespasiano di Giroldo and his companions for the crimes they committed in these places according to the process sheets 2673. 1574 'being Peter Chirico from Spoleto the Rector'.