Maratona di San Valentino

The Amateurs Podistica Terni organized in collaboration with the Diocese of Terni Narni Amelia, with the Municipalities, Bodies and Associations Pro Loco of Terni, Ferentillo, Arrone, Montefranco, Collestatte, Narni, in collaboration with groups of jogging Terni, under the patronage of Umbria region, the province of Terni, presents the Maratona di San Valentino!! This scenic route is highlighted by the creation of the Falls which is dated back to 271 AD and is an incredible work of Roman engineering, designed to favour the out flow of the Velino waters, responsible for frequent and disastrous flooding and transformation of extensive areas of land into unhealthy swamps.

The main cavities of speleogical interest as well as for the beauty and evocative power of the environment, are enclosed in three distinct complexes: the first includes the Grotta della Morta (Cave of Death)and the Grotta delle Diaclasi, and spreads over 287 m. with a maximum depth of 23 m.; the second is the Grotta delle Colonne (Cave of Columns), developed in two main parts, that afterwards collapsed forming two non communicating environments; finally with a spread of over 190 m., theGrotta della Condotta, partly collapsed with an old water pipe passing through it.