Sete Cidades Caldera Rim Walk

Walking the caldera’s rim

Sete Cidades is a volcanic caldera in the west of São Miguel, and its most rewarding way of seeing it is not from a car park viewpoint but from the rim path that traces the crater edge above the village and its two lakes. This is a route guide to that walk: where it runs, how long the different sections take, what the trail markings mean, and the two things every visitor gets wrong before they set out — that the “twin lakes” are one connected lake, and that the crater makes its own weather.

This page covers the rim trail itself. It does not cover the drive-and-viewpoints route from the capital, which is handled separately in the half-day Sete Cidades trip from Ponta Delgada, and it does not explain how the caldera itself formed — for that, see the Sete Cidades volcano guide.

The route in outline

The rim path runs along the outer edge of the crater, a broken ring of roughly 12 kilometres if walked in full, following farm tracks, grazing paths and short stretches of paved lane between the high points. It is not one continuous purpose-built trail so much as a stitched line of local paths that hikers and the regional trail network have connected into a rim circuit. Most people do not walk the whole thing in one go; they choose a section.

The three sections walkers use most:

• Vista do Rei to the western rim. The best-known section, starting near the famous lookout above the causeway between the two lakes and running along the crater’s western wall, with the ground falling away sharply on the lake side.
• Boca do Inferno to Lagoa do Canário. A shorter stretch above the smaller crater-within-a-crater at Lagoa do Canário, reached from the Boca do Inferno viewpoint, with views back down into both the small lake and the main caldera.
• Grota do Inferno and the southern rim. A quieter, less-walked stretch along the southern edge, with fewer people and longer stretches without a view, opening up again near the crater’s rim towns.

None of these connects seamlessly to the next without route-finding on tracks that are not always obviously the trail, which is the main reason most visitors walk one section rather than stringing several together without local guidance or a downloaded map.

Distances and times

Section	Approximate distance	Walking time	Difficulty
Vista do Rei to western rim viewpoint	4-6 km one way	1.5-2.5 hours	Moderate, some steep drops beside the path
Boca do Inferno to Lagoa do Canário	2-3 km round trip	1-1.5 hours	Easy to moderate
Grota do Inferno / southern rim	6-8 km	2.5-3.5 hours	Moderate, exposed to wind
Full crater rim circuit	Approximately 12 km	6-8 hours	Strenuous, full day, route-finding required

These are walking times only, without stops. Add time freely for photographs — the rim is one of the most photographed stretches of trail on the island, particularly with the hydrangea hedges in flower, covered separately in the hydrangeas and viewpoints photo guide.

The two lakes, one lake

From the rim, the crater’s defining sight is the pair of lakes joined by a narrow land bridge, one showing blue and one green. It is worth saying plainly, because it surprises almost every first-time visitor: Lagoa Azul and Lagoa Verde are not two separate bodies of water. They are one connected lake pinched at the middle, and the colour difference comes from light angle, depth and what is reflected off the surface on each side, not from any difference in the water itself.

Walk the rim on an overcast morning and both sides can read the same flat grey; walk it at midday in full sun and the split becomes vivid. The trail itself gives the best vantage on this, since the causeway that visibly joins the two “lakes” is visible from several points along the western section.

Waymarks, and when the trail is not open

Hiking trails on São Miguel are marked with the Azores’ PR (pequena rota) system — painted waymarks, usually yellow and red, at junctions and gates along the route. On the rim circuit these markings are not continuous the way they are on a dedicated purpose-built trail; stretches run along farm tracks and unmarked field edges, and walkers should carry a downloaded map or offline GPS track rather than relying on signage alone, particularly on the quieter southern rim.

The more important caution is closures. Several of São Miguel’s coastal and crater-edge paths close, sometimes for months, after landslides or heavy rain damage — a real and recurring issue on the island, not a rare event, and one covered in more general terms in the guide to PR trail markings and closures. A closure is not always signed clearly at the point where you’d turn back; it is worth checking the regional trails information before driving out, especially after a wet spell, rather than discovering a barrier partway along.

What to expect on the day

Two honest expectations shape a good rim walk here.

The crater makes its own weather. Sete Cidades sits inside a bowl that traps cloud, and it is common for the rim to be wrapped in mist while the coast a few kilometres away is clear and sunny — or the reverse. This is a general feature of São Miguel’s weather, explained further in the guide to how the island’s weather changes hour to hour and the broader São Miguel weather guide: conditions on one side of the island tell you very little about the other, and inside a caldera less still.

Plan the walk with a spare day if you can, and treat a clear view from the rim as a bonus rather than something to build a single visit around. No responsible guide or driver can promise you will see the lakes; anyone who does is guessing.

The ground and wind are real factors, not scenery. Paths along the crater edge run close to steep drops in places, grass is often wet even without rain, and the exposed rim catches wind that is stronger than it looks from below. Trail shoes or boots with grip matter more here than on most of the island’s other walks. A packing list geared to this kind of walking is in the São Miguel packing list.

Getting to the trailheads

Most rim-walk trailheads sit off the road that circles the crater rim above Sete Cidades village, reachable from Ponta Delgada by rental car in around 30-40 minutes. Public transport does not serve the individual trailheads well, so a car, a taxi drop-off with a pre-arranged pickup, or an organised hike is the practical way to reach the start and end points, particularly for one-way sections. If you would rather not navigate the route-finding yourself, several operators run guided hikes on the rim.

a guided sunset hike along the rim, finishing with local wine and cheese is a straightforward way to walk one of the western sections with someone who knows the current trail state, timed for the light rather than the middle of the day.

For a shorter, easier introduction that combines walking with the crater’s other viewpoints, a half-day guided hike around the crater lakes covers a gentler stretch with more stops. And if the lake itself appeals more than the rim above it, a paddleboard rental on Lagoa Azul puts you on the water the rim path looks down on, which is its own way of seeing how the “two” lakes actually meet.

Rim walk or crater viewpoints — which to choose

Not every visit needs the rim trail. If your time is limited to a few hours and you have a car, the drive-up viewpoints at Vista do Rei and Boca do Inferno give strong views with none of the walking, and that shorter version of a Sete Cidades visit is covered fully in the half-day trip from Ponta Delgada. The rim walk is worth the extra time when you want to be on the crater edge rather than looking at it from a car park, when the hydrangea hedges are in flower along the path, or when a clear day makes the walking worthwhile in its own right.

For comparison against the island’s other trails — the crater lake at Lagoa do Fogo, the coastal paths in the north and east — see the best hikes on São Miguel compared. Sete Cidades’ rim is generally easier underfoot and better signed near the main viewpoints than Lagoa do Fogo, which has no facilities at all and a rougher approach.

Practical notes

• Water and facilities. There are no services on the rim itself; fill up in Sete Cidades village or before leaving Ponta Delgada.
• Phone signal drops out along stretches of the southern and western rim — download an offline map before you start.
• Season. The path is walkable year-round; June to September gives the driest underfoot conditions and the best chance of a clear view, while November to March brings mud, wind and a higher chance of cloud sitting in the crater all day.
• Photography. Morning light tends to catch the lake colours best, before afternoon cloud is more likely to build over the crater.

FAQ: hiking the Sete Cidades caldera rim

Is the Sete Cidades rim walk a full loop?

The rim can be walked as a full circuit of the crater edge or, more commonly, as an out-and-back or point-to-point section between two viewpoints. Most visitors walk a stretch of a few hours rather than the entire ring, which takes most of a day.

How long does the caldera rim walk take?

A short viewpoint-to-viewpoint stretch takes 1.5 to 2.5 hours. The fuller sections along the western and southern rim run 4 to 6 hours. Walking the complete ring around the crater is a 6 to 8 hour day for a fit hiker in good weather.

Are Lagoa Azul and Lagoa Verde actually two different lakes?

No. They are one connected body of water pinched by a narrow causeway. The blue and green colours come from light angle and water depth on each side, not from two separate lakes, so the shade you see changes through the day and with the weather.

What trail markings should I follow?

São Miguel’s hiking network uses the Azores’ PR (pequena rota) waymarking system: painted yellow-and-red trail signs at junctions and along the route. Check the current numbering and any posted diversions locally before setting out, since sections are occasionally rerouted.

Can the caldera rim trail be closed?

Yes. Coastal and crater-edge paths on São Miguel close after landslides or heavy rain more often than visitors expect, and a closed section is sometimes only signed at the trailhead. Check the regional trails information before you drive out, especially after wet weather.

Is the view from the rim guaranteed to be clear?

No. The Sete Cidades caldera generates its own cloud and is frequently wrapped in mist, sometimes for most of a day even when the coast nearby is sunny. Treat a clear rim view as a bonus, not a booking.

Do I need a guide, or can I walk the rim alone?

The main viewpoint sections are walkable independently by anyone with normal fitness, sturdy shoes and a paper or offline map, since phone signal drops in places along the rim. A guided hike adds local knowledge of the current trail state and is worth it for the longer loop or for a first visit in poor weather.

What should I pack for the walk?

Waterproof layers regardless of the forecast, boots or trail shoes with grip for wet grass and mud, water, and a hat for when the cloud lifts and the sun comes out. Wind on the exposed rim is often stronger than it looks from the village below.