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Grotta Perduta

The only horizontal cave, partly excavated for iron extraction, with a development of 10 metres and a width of 7.

Narni 10m 5m

EspeleoWorld

Grotta Perduta

The only horizontal cave, partly excavated for iron extraction, with a development of 10 metres and a width of 7.

Narni

Length: 10 m · Depth: 5 m

Updated record

https://espeleoworld.com/en/c/grotta-perduta-narni-terni

Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.

The only horizontal cave, partly excavated for iron extraction, with a development of 10 metres and a width of 7.

Characteristics

  • Type: Cave
  • Municipality: Narni
  • Cadastre no.: UM938
  • Length: 10 meters
  • Depth: 5 meters
  • Record updated:

Location

Entrance: due to its proximity to the Madonna del Fondo dei Frati mine and the presence of iron oxide, it was excavated in 1700. Possible continuation with air; it serves as the lower entrance to the main fault of Monte Santa Croce.

Entrance context: natural, anthropized, Cava/Mine.

Locality: nera Montoro, Fosso Fondo dei Frati.

Map

Entrances

Always verify coordinates and access conditions before setting out.

  1. Grotta Perduta

    Elevation: 157 m

    42.501942, 12.489884
    Open in map Open in Google Maps
Download all entrances as GPX

Description

Morphology

The only horizontal cave, partly excavated for iron extraction, development 10 metres by 7 in width.

Trend: predominantly horizontal.

Geology: MAS Limestone Massiccio - Lower-Upper Jurassic (Sinemurian-Pliensbachian); massive limestones; massive.

Progression

Traversability: easy; recommended period all year round.

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Source: Catasto Cavità Umbria (Federazione Umbra Gruppi Speleologici, FUGS) (catasto.fugs.it), modified. LicenseRef-FUGS-no-licence-stated Federazione Umbra Gruppi Speleologici (FUGS), Catasto Speleologico dell'Umbria · https://catasto.fugs.it/index.php?mod=caves&op=view&id=938 · data as of 2025