Parco Adda Nord
The Parco Adda Nord is situated along the northern end of the area through which the River Adda flows, a landscape created by the retreat of the glaciers which during the Quaternary Period advanced from the Alps as far as the plains. This means that the park today is composed of a system of fluvio-glacial terraces. It includes the areas along the banks of the Adda as it crosses the high plain below Lake Como. Along this stretch, the river winds among natural inlets where the bedrock emerges (conglomerate banks), to make up a landscape which alternates stretches of dense woodland with more anthropized areas.
All that remains of the woodlands which until the last century covered much of the surrounding area are stands of black alder, plane tree, poplar, birch, willow and oak. There are also black poplar, black locust, white willow, black alder and English oak along the river banks north of Trezzo sull’Adda. Apart from the woods, vast areas are covered with species typical of deciduous woodland and undergrowth such as hornbeam, sweet chestnut, dogwood, hazel and black locust.
The marshlands are dotted with lovely aquatic flowers: delicate water-lilies, the wild yellow lily, lily-of-the-valley and many varieties of veronica. This environment is also the habitat of a wide variety of fauna. The amphibians include the European tree frog with its brilliant green colouring and black stripe down its side, the green frog and the common brown frog. There is also a wide variety of birds: swans, ducks, mallards, coots, hooded crow, seagulls and even the grey heron whose numbers are on the rise.