On the island's east coast, young volcanic cones rise behind a fishing village on a black-lava shore. One hour up the loose cinder flank of the nearest crater gives you the whole wild coast, the empty island of Santa Luzia and, on the way there, a river of Saharan sand.
Mindelo is all colour and music; Calhau, at the other end of the island's only cross-country road, is black rock, cinder cones and surf, with a village of fishermen and weekend houses tucked into the bay.
The cones behind Calhau are among the youngest volcanic features on São Vicente. There is no formal trail: choose the nearest cone behind the village and climb its loose flank directly, taking small steps on the cinder. It is steep but short, and the rim takes about half an hour to reach.
From the top you see the dark lava coast running north and south, the green ribbon of the Ribeira de Calhau valley inland, and out to sea the uninhabited island of Santa Luzia and its islets. Come down the same way, and swim or eat fish in the village afterwards.
On the road out from Mindelo, near Madeiral, a tongue of pale sand blown from the Sahara has drifted across the hills below the volcano of Viana. It looks out of place among the dark rock, and it is worth a short stop and a walk up the dune. The Deserto de Viana sand drifts on the road out are the photo stop on the way.
A half-day outing: a drive across the island, a dune stop, one short climb and a swim.
Take a taxi or aluguer east past Madeiral; the road crosses the island's dry interior.
Stop where the pale sand spills across the slopes below Viana. Walk up for the view and the contrast.
The road follows the Ribeira de Calhau to the village and its bay of dark rock and surf.
Climb the nearest cone behind the village by its loose flank, then walk part of the rim for views of Santa Luzia.
Descend the same way, and swim where the locals do in the sheltered parts of the bay.

Taxi from Mindelo, about CVE 1,500–2,500 each way; agree a waiting or return time. Aluguers run on weekends.
Pair it with the north-coast walk from Salamansa (a long day) or a drive via Baía das Gatas.
In August–October, avoid ribeiras when rain is forecast: dry valleys can flood suddenly.
São Vicente practical notes →Wikimedia Commons photographs are used under their licences.