Lagoa das Sete Cidades and the blue-green crater bowl

Lagoa das Sete Cidades near Ponta Delgada fills a volcanic caldera with blue and green water, pasture and steep rims.

Lagoa das Sete Cidades lies in the west of São Miguel, in the municipality of Ponta Delgada, within a broad volcanic caldera. It is known for the twin expanse of water in the Sete Cidades basin, with Lagoa Azul and Lagoa Verde sharing one crater floor.

The lake at the centre of a volcanic basin

The setting is a large collapsed caldera associated with the Sete Cidades volcano, part of the Azores archipelago. The basin is framed by steep rims, while the lake floor opens into pasture, woodland and smaller volcanic forms.

The place belongs to the Sete Cidades Massif, a volcanic complex on the western side of São Miguel. The landscape combines water, crater walls and slopes in a single enclosed bowl.

Blue and green water in one lake

The lake is usually described as two adjoining bodies of water, divided by a narrow crossing. Lagoa Azul and Lagoa Verde make the contrast that gives Lagoa das Sete Cidades its name and visual identity.

That distinction is visible from the rim and from the shore, where the two colours appear side by side across the basin. A low bridge carries the road between the two halves.

The surrounding slopes hold scattered settlement, pasture and volcanic landforms. The result is a place where the crater edge, the water and the cultivated ground remain closely interwoven.

Set within São Miguel’s western volcanic country

Geologically, Sete Cidades belongs to the volcanic history of São Miguel, which is built from central volcanoes, cones and collapse structures. The caldera and its lake occupy the western end of the island.

For travellers interested in landforms, this is a direct view into volcanic structure rather than a single isolated lake. The lake sits inside a depression that makes the crater wall part of the experience of the place.

Visiting Lagoa das Sete Cidades: what travellers from Western Europe should know

• The lake lies on São Miguel, west of Ponta Delgada, and the roads into Sete Cidades reach the crater basin from the island’s interior.
• The terrain is volcanic, with steep caldera sides and a basin floor that spreads out below the rim. Viewpoints and roadside stops frame the water from above.
• The lake sits within a sheltered depression. The crater walls, pasture and smaller volcanic forms give the place a distinctly enclosed character.
• The official language is Portuguese and the currency is the euro.
• Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.

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Frequently asked questions about Lagoa das Sete Cidades

Where is Lagoa das Sete Cidades?

It is on São Miguel in the Azores, within the municipality of Ponta Delgada. The lake occupies the Sete Cidades caldera in the west of the island.

What should travellers expect on a visit?

The main impression is a crater lake set inside high volcanic walls, with roads and viewpoints around the rim. The basin also contains pasture and the twin blue-and-green water surface.

What makes it distinctive?

The lake’s split appearance is its clearest feature, with Lagoa Azul and Lagoa Verde forming a single body of water. The volcanic bowl around it makes the landscape read as a complete crater.