
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.
EspeleoWorld
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
Length: 121 m · Depth: 71 m
Updated record
https://espeleoworld.com/en/c/pozzo-ferragosto-san-venanzo-terni
Information can change. Always verify coordinates, access, weather, and cave conditions before setting out.
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.
Photos
© 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
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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Nearby caves
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


