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Grotta di Pizzo Corvo

Grotta di Pizzo Corvo

A wide collapse doline with initially vertical walls that flare out toward the bottom, formed by a thick layer of collapse boulders partly colonized by bryophytes.

Narni 48m 48m

A wide collapse doline with initially vertical walls that flare out toward the bottom, formed by a thick layer of collapse boulders partly colonized by bryophytes.

Characteristics

  • Type: Pothole
  • Municipality: Narni
  • Cadastre no.: UM82
  • Length: 48 meters
  • Depth: 48 meters
  • Record updated:

Location

Coming from Narni, follow Strada delle Pretare SP64 until you pass Lago di Recentino. Then turn right onto Strada di Colombata up to the house at the edge of the bosco, at the height of which the dirt road turns sharply right. After about 50 m there is space to leave the car. From here go back in the direction of the house. On the left you see a metal bar that can be crossed on foot to take the path that runs alongside the bosco (Strada di Colle Rosso path); follow it keeping the house on the left and the bosco on the right. On reaching a junction, turn right and then, after a few metres, immediately left along an evident track that leaves the methane pipeline route on the right, entering the bosco uphill. Follow the path for about 100 m to the disused fence with an old danger sign that runs along the overhanging rim of the doline. Route: 300 m, 10 min. on foot. Route information: Scrub or bushes, Walkable path.

Entrance: wide overhanging doline opening on the wooded slope. Entrance setting: Natural, Slope. Access: open, fence with barbed wire, damaged; beyond the fence the wall is immediately overhanging. Location: Casa Colombaia, near Villa Eroli.

Map

Entrances

Always verify coordinates and access conditions before setting out.

  1. Grotta di Pizzo Corvo

    Elevation: 225 m

    42.508942, 12.551644
Download all entrances as GPX

Photos

Grotta di Pizzo Corvo - Photo, NarniView image
Click to enlarge

© Mauro Barbieri · LicenseRef-FUGS-media-per-item · Federazione Umbra Gruppi Speleologici (FUGS), Catasto Speleologico dell'Umbria · https://catasto.fugs.it/index.php?mod=caves&op=view&id=82

Image 1 of 1

Description

Morphology

Wide collapse doline that opens with initially vertical walls and then flares out toward the lowest portion. The bottom is formed by a thick layer of collapse boulders partly colonized by a dense population of bryophytes. Trend: vertical.

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

Hydrology

Hydrology and meteorology: no circulation; ambient temperature, although the scarce internal irradiation causes a cooling of the doline.

Progression

Traversability: experts only; recommended period: dry period. Progression difficulty: pits.

Rigging: not rigged; rigged on 3 naturals (trees). Clean well of branches and soil as it discharges a lot. Recommended use of ropes or slings "choked" so as to keep the attachment high and reduce rope friction with the ground.

Other details

Hazards: dangerous access, landslides/collapses, pits that discharge, other hazards.

Pollution: low intensity, presence of solid plastic debris thrown even since time immemorial.

History

Notes on the name: it seems that the name derives from the fact that the water is rapidly absorbed, hence the term Corbo = basket.

Bio

Other hypogean fauna: presence of a live toad at the bottom on 28/04/2025.

Hypogean botany: population of bryophytes that colonizes the highest part of the debris cone at the bottom, where solar irradiation reaches.

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Bibliography

LIPPI BONCAMBI C. (1950) Sullo stato attuale del Catasto Speleologico dell'Umbria LEMMI G. (1958) Note di aggiornamento del Catasto Speleologico dell'Umbria LEMMI G. & COLETTI G. (1961) Elenco catastale delle grotte dell'Umbria ANONIMO (1962) Attività del Gruppo Grotte dell'Istituto di Geologia dell'Università di Perugia

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=82 · data as of 2025 · Source: Catasto Cavità Umbria (Federazione Umbra Gruppi Speleologici, FUGS) (catasto.fugs.it), modified. LicenseRef-FUGS-media-per-item Federazione Umbra Gruppi Speleologici (FUGS), Catasto Speleologico dell'Umbria · data as of 2025