The south-western side of the mountain is characterized by an imposing sub-vertical wall of over 700 m in height which makes it majestic and easily identifiable from the whole coast of Versilia, to which it is rather close. Its north-eastern side is much less craggy and is locally covered with beech woods.
The mountain is renowned for the fine marbles quarried mainly in the Le Cervaiole locality owned by the company Henraux srl. The sequence of Monte Altissimo marbles consists of a basal part made up of white and gray marble alternating in regular benches with a reduced thickness of 0, 8-1.20 meters, followed by an intermediate part made up of well layered benches of white and statuary marbles with limited gray marbles. In the highest part of the sequence, marble takes on a more massive appearance and the benches are no longer easily defined. The statuary marble, typical of the intermediate part of the “sequence”, is always well identified by a level of muscovite 0.5-2 cm thick, which seems to constitute a sedimentary “marker”, present on both the southern and northern sides of the structure.
Along the slopes of the mountain you can visit the trenches of the “Gothic Line”, built by the Germans in the Second World War and also ancient “lizze”, ie roads to slide the large marble blocks downstream.
