The distinct landscape, marked valleys, abundant streams, typical flora and fauna and geologic diversity of Monchique Range, sporting rocks of relative rarity, make it an original and unique place in the Algarve.
Located in the northwest sector of the Algarve, the Monchique Range has an east-west elongated topography 16 km (10 miles) long and up to 6 km (3.7 miles) wide. It has three main units: Picota (773 m, 2536 feet high), located in the eastermost block; Fóia (902 m, 2959 feet high) and Picos (574 m, 1883 feet high), located in westernmost block. Both block are separated from each other by a northeast-southwest oriented valley.
Also known as Monchique Alkaline Massif, the Monchique Alkaline Complex is part of the Iberian Alkaline Igneous Province, which encompasses two other Portuguese igneous massifs (one in Sines and the other in Sintra), the Lisbon Volcanic Complex, several outcrops of magmatic rocks that exist in the Portuguese mesozoic sedimentary basins (Algarve Basin and Lusitainian Basin), the Mount Ormonde Massif and several igneous bodies in the Pyrinees.
Several Places of Geologic Significance (PGS) have been identified throughout both trails, where some characteristics features of tthe municipality's geology can be appreciated. It should be noticed, thoug, that geologic features similar to those pointed out in the different PGS can be found throughout both trails and in other places of the municipality - all it takes is an attentive eye and you'll be able to spot them all by yourself!