Geology in the Sierra Norte de Sevilla Natural Park
The Sierra Norte de Sevilla Natural Park is not particularly mountainous: quite the contrary, as most of the land is made of rolling hills and mounds, broken by rivers beds such as those of the River Viar. Soil is thin and poor in content, with the sub-soil composed mainly of slate, granite and quartzite. The land mass is a mixture of sedimentary rock that some 550 million years ago was under the sea, and volcanic magma, examples of which can be found scattered in the countryside around El Pedroso and in El Real de la Jara and called “Plutos” in deference to Pluto, the Greek god of hell and the depths.
With the exception of the northern confines of the Natural Park, there are no mountains as such: indeed, the highest spot is a mere 906 metres above sea level, and although accessible, not of specific interest as such (curiously, the highest peak in the province of Seville is at the very southern point, bordering on the provinces of Cádiz and Málaga).