The Agua d’Alta Cliff is the largest existing waterfall in the Naturtejo Geopark and in all of the Beira Baixa, in the Agua d’Alta River, with a drop of 50 metres followed by a succession of 3 veils of turbulent water. It is possible to observe it up close and from the lookout point located at the top of the waterfall at Cabeça Murada. Alternating layers can be seen with different degrees of resistance to erosion, metric embankments of quartzite alternate with decimetric embankments of quartzite and pelites, less resistant to the fluvial wear. Erosion occurred in a differential manner and affected the less resistant layers. Over time a lithological cliff composed of three quartzite bars was formed. The richness of this location is increased due to its important biodiversity, including remnants of Laurissilva which covered SW Europe before the glaciers and which currently only exist in a few rare locations, such as for example the shrub (Viburnum tinus) and one of the largest populations of the laurel (Prunus lusitana lusitana) which still remains in the world. Another way to explore this location, as well as the other sites of the Serra do Moradal, is by means of the Orvalho GeoRota.
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