sentences:  Caldas de Monchique is a well-known spa town with geothermal springs also located in this range.Rivers Seixe, Aljezur and Odiáxere have their sources in this range.The Monchique Range is part of the Late-Cretaceous Iberian Alkaline Igneous Province and is related to the Mount Ormonde seamount in the Gorringe Bank.