The aspen

The track runs close to an aspen wood. This tree has a smooth, greenish trunk and rounded, crenelated leaves which take on magnificent colours in autumn. The stem, or petiole, of aspen leaves is flat and twisted, so it can be caught by the slightest breeze making the foliage «quake» hence its common name, the quaking aspen. It grows in places where the soil is quite damp.