Monchique.

The two mountains to the north of Portimão formed the Serra de Monchique. The higher one is called Foia, and the other Picota. They are the remnants of Jurassic volcanoes. The Rocha Negra - Black Rock - of Praia da Luz is an intrusion of the lava from those volcanos. The village of Monchique lies on the slopes of Foia. Below the village are the Caldas de Monchique, the mineral water springs utilised since Roman times. A Bishop built a Hospital here, for the benefit of those wishing to take the waters. On the top of Foia are the radio and television masts which serve the Algarve, and from here it is said that you can see Lisbon, if the weather is fine.