Buca della Moretta

A sub-vertical cavity with stepped slides and two pits of 6 m and 30 m, whose wide active sinkhole drains the water of a catchment basin and is hidden by lush vegetation.

San Venanzo 30m 47m

EspeleoWorld

Buca della Moretta

A sub-vertical cavity with stepped slides and two pits of 6 m and 30 m, whose wide active sinkhole drains the water of a catchment basin and is hidden by lush vegetation.

San Venanzo

Length: 30 m · Depth: 47 m

Updated record

https://espeleoworld.com/en/c/buca-della-moretta-san-venanzo-terni

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

A sub-vertical cavity with stepped slides and two pits of 6 m and 30 m, whose wide active sinkhole drains the water of a catchment basin and is hidden by lush vegetation.

Characteristics

Type: Pothole
Municipality: San Venanzo
Cadastre no.: UM297
Length: 30 meters
Depth: 47 meters
Record updated: November 12, 2026

Location

Route: 200 m, 3 min. on foot. Following the SR79 (former SS79 Bis) you reach about Km 22+300 m, at the locality La Cerasa, leaving the vehicle in the lay-by, about 250 m from the houses opposite the junction for the dirt road leading to Titignano (direction towards Orvieto). On foot head North crossing the field for about 50 m, until you reach the edge of the vegetation; when the hunting hut is in sight, enter along the paths through the scrub and follow the catchment basin that leads to the sinkhole.

Route information: there is no beaten path; scrub or woodland.

Entrance: wide active sinkhole that drains the water of a catchment basin, hidden by lush vegetation.

Entrance context: natural, rural. Access: free. Locality: Poggio Cerasa.

Entrances

Always verify coordinates and access conditions before setting out.

Buca della Moretta
Elevation: 525 m
42.785360, 12.276000
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Photos

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Description

Morphology

Sub-vertical cavity consisting of stepped slides and two pits of 6 m and 30 m respectively. Trend: mainly vertical.

Hydrology

Hydrology and meteorology: temporary flooding, absorbing, temporarily absorbing, temporary lakes, dry, streams; internal temperature 16.7 °C; humidity 80 %; air flows absent.

Progression

Traversability: experts only; recommended period not with precipitation. Rigging: fixed; largely obsolete with old fix and spit, there are some 10 mm fix but it should be revised. Progression difficulty: pits, drops, slides, narrow passages. Water difficulties: waterfalls, watercourses. Hazards: dangerous access, landslides/collapses, floods/flooding, presence of gas, pits that discharge.

Other details

Geology: SCC Scaglia Cinerea - Upper Eocene-Lower Miocene (Priabonian-Aquitanian); marls; stratified; inclined; random.

Bio

Other hypogean fauna: beetles, scarab beetles and caddisflies, also a stag beetle on 19/08/2025. Hypogean botany: abundant moss and vegetation at the entrance.

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Bibliography

MORETTI G.P. & GIANNOTTI F.S. (1967) Quello che si sa dei tricotteri cavernicoli italiani

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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=297 · 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