Grotta Sfondata
Puglia · Salento · Adriatic Sea · Otranto

Grotta Sfondata

Otranto’s famous coastal cave with a collapsed roof and a large opening to the sky, in the Mulino d’Acqua cave system.

Grotta Sfondata: what to know before you go

The 2026 Apulian Speleological register confirms the cave and coordinates. The updated page keeps the visual appeal of the Blue Eye but does not encourage visitors to approach the upper rim.

Registered in 2026

The Apulian Speleological Federation lists 40.17030, 18.48057.

Data

This is the main mapping reference.

Collapsed roof

The name comes from the collapse of part of the cave roof.

Effect

A large opening remains to the sky.

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Mulino d’Acqua

It belongs to the bay’s cave system.

Nearby

Conchiglie and Eremita are in the same stretch.

Dangerous upper rim

The dramatic view from above does not make the edge safe.

Rule

Do not cross margins, barriers or paths.

Sea viewing

It can be appreciated during coastal boat trips.

Weather

Approach and stops depend on wind and waves.

Snorkelling

Possible outside in calm sea.

Safety

Avoid unstable walls or overhangs.

Families

It is not a toddler beach.

By boat

Always follow the crew.

What to bring

Walking shoes if coming by land, water, hat and sunscreen.

Photos

Use safe viewpoints away from the rim.

The gallery shows the available and verified photographs for this place.

Book a beach umbrella

Beach clubs and bathing establishments linked to this location.

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Visit other beaches in the same seaside resort (Otranto)

Continue along Otranto’s northern coast comparing nearby beaches, caves and access points.

Spiaggia di Calamuri

Spiaggia di Calamuri

“Calamuri” is a real place-name south of Otranto, also confirmed by the Speleological Register through Vora Calamuri. No institutional boundary for a standalone beach was found, so the pin is an area reference rather than a certified sea access.

Spiaggia di Punta San Nicola

Spiaggia di Punta San Nicola

The historic guide also used the local name “Filu de Mienzu”. The maritime ordinance officially identifies “Spiaggia San Nicola” on the cliff southeast of the harbour and defines a restricted sea area because of landslide risk.

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Spiaggia degli Scaloni

Spiaggia degli Scaloni

This central beach is also known as Spiaggia dei Gradoni: fine sand, free and serviced sections, with immediate access from the promenade.

Riviera degli Haethey

Riviera degli Haethey

An urban beach just north of central Otranto, with fine sand, generally shallow water in the sandy sections, free areas and nearby beach clubs: convenient if you want sea and town within walking distance.

Faro di Punta Cràulo

Faro di Punta Cràulo

Otranto’s white maritime light at Punta Craulo, north of the harbour, beside Porto Craulo beach and low rocky shoreline.

Lido della Staffa

Lido della Staffa

A small free cove north of Otranto between La Castellana and Canale del Càfaro, with a mixed sand-and-rock shoreline.

Canale del Càfaro Cove

Canale del Càfaro Cove

A small rocky inlet on Otranto’s northern coast, between Staffa and the coves towards Grotta Monaca: clear water, paths and steps for access, an interesting seabed for snorkelling and virtually no facilities in the cove itself.

Spiaggia della Cattapìgnula

Spiaggia della Cattapìgnula

Cattapìgnula means “bat” in local dialect; local sources describe a cave used by bats and a sea-accessed cavity. The pin is approximate for the coastal sector.

Cala di San Pietro dei Canali

Cala di San Pietro dei Canali

A small rocky cove north of Otranto on the Hermit Trail, among caves and low limestone cliffs.

Cala di Grotta Monaca

Cala di Grotta Monaca

A rocky cove on Otranto’s northern coast, known for its large semi-submerged cave. Today the visit must be planned around cliff-safety rules first: maritime restrictions linked to landslide risk are listed for this stretch of coast.

Grotta dell’Eremita

A large sea cave north of Otranto in the Mulino d’Acqua cave system, close to several neighbouring caves.

Scoglio di Sapunerò

Scoglio di Sapunerò

Sapunerò is a rocky landmark on Otranto’s northern coast, along the route between Grotta Monaca and Mulino d’Acqua; the pin is approximate because no standalone institutional coordinate was found.

Mulino d’Acqua Bay

Mulino d’Acqua Bay

A spectacular bay of cliffs, small inlets and sea caves. Today, however, the most important thing to know before you go is that sea access, bathing and remaining below the cliff are affected by safety restrictions.

Baia Imperia

Baia Imperia

A secluded rocky bay north of Otranto, between the Mulino d’Acqua sector and Torre Santo Stefano, commonly visited from the sea.

Torre del Serpe

Torre del Serpe

The ICCD cultural-heritage record describes Torre del Serpe as a coastal tower about 200 m from the sea and 35 m above it; tradition links it to an earlier lighthouse, while today it survives as a partly ruined structure.

Grotta delle Conchiglie

A sea cave in Mulino d’Acqua Bay, immediately beside Grotta Sfondata and reached from the sea.

Lungomare di Otranto

Lungomare di Otranto

This guide mainly covers Lungomare degli Eroi, the public promenade beside the historic centre; it should not be confused with Lungomare Terra d’Otranto or Lungomare Kennedy.

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Services near Grotta Sfondata

Choose a service and view all available businesses and information on its dedicated page.

Continue along the coast

This guide belongs to Otranto; configured coastal navigation links Baia delle Orte and Torre Santo Stefano.

Frequently asked questions about Grotta Sfondata

Location, access, sea, families, safety and practical information.

Why is it called Sfondata?
Because part of the roof collapsed.
Coordinates?
40.17030, 18.48057 in the 2026 cave register.
Where is it?
In the Mulino d’Acqua area.
Can I view it from above?
Only from safe points well away from the rim.
Can I approach by sea?
Yes when conditions allow.
Good for children?
Not as an exploration site.
Can I snorkel?
Yes outside in calm sea.
Near Grotta delle Conchiglie?
Yes, they are practically adjacent.