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Pozzo Ferragosto

Pozzo Ferragosto

A cave with predominantly vertical development, with fusiform pits up to 70 m deep, a small lake and a narrow passage toward the terminal chamber, opening on Scaglia Variegata.

San Venanzo 121m 71m

A cave with predominantly vertical development, with fusiform pits up to 70 m deep, a small lake and a narrow passage toward the terminal chamber, opening on Scaglia Variegata.

Characteristics

  • Type: Pothole
  • Municipality: San Venanzo
  • Cadastre no.: UM886
  • Length: 121 meters
  • Depth: 71 meters
  • Record updated:

Location

The route involves 480 m on foot, 25 min. Once you reach the settlement of Opedaletto along the SS317 that leads to Monte Peglia, take the SP109 that leads to Ripalvella and Collelungo, proceed for about 6.7 km along the dirt road and park in the clearing on the hairpin bend near a gate at the locality Sorbare di Sopra. Proceed on foot through the open field on the South side of the road, making your way among the shrubs without a clear track. After about 200 m you enter the bosco (woods) to the right of the field and ford the stream, following it downhill always on the right side. After about 170 m the bosco (woods) thins out and you walk on bare rock with a slight slope in a Southerly direction; after about 100 m you reach the cave in the scrub, near the orographic right of the stream.

Route information: there is no beaten path; scrub or bosco (woodland); dangerous access.

Entrance: a wide floor entrance of about 2x2 m protected by a grate, located slightly above the orographic right of the Fosso del Pozzo, also protected by a fence with barbed wire. Entrance setting: natural. Access: fence, door/grate; closed cave; protective grate and barbed wire. Locality: Ospedaletto, Podere il Pozzo.

Map

Entrances

Always verify coordinates and access conditions before setting out.

  1. Pozzo Ferragosto

    Elevation: 488 m

    42.820170, 12.261240
Download all entrances as GPX

Photos

Pozzo Ferragosto - Photo, San VenanzoView 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=886

Image 1 of 1

Description

Morphology

Cave with fusiform pits with a maximum depth of 70 m, with a small lake and a narrow passage leading toward the terminal chamber; possible continuation. It opens on Scaglia Variegata. Trend: predominantly vertical.

Hydrology

Hydrology and meteorology: absorbent, temporarily absorbent, slight flows; internal temperature 14.2 °C; humidity 87 %; air flows absent. Measurements as of 29/12/2024, external conditions at 11: temperature 14.5 °C, humidity 70 %.

Water difficulties: watercourses.

Progression

Traversability: experts only; recommended period all year round. Rigging: temporary. Hazards: dangerous access, landslides/rockfalls, pits that discharge.

Other details

Geology: VAS Scaglia Variegata - Eocene Med.Sup. (Lutetian-Priabonian); marls; stratified.

Bio

Chiroptera: at least two species of chiroptera present, elements identified as of 29/12/2024. Other hypogean fauna: a small frog present in the terminal part, also a large fly as of 29/12/2024. Hypogean botany: small mushrooms and roots pushing downward in the initial part.

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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=886 · 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