The area of torrent Nervia, with the Municipalities of Rocchetta Nervina and Pigna accessible from the area of Ventimiglia - Bordighera, is the nearest to the sea and covers about 20 km among flower cultivations, olive groves, and vineyards giving way in the north to a characteristic mountain landscape dominated by chestnut tree, conifer, and beech tree woodlands.
Real naturalistic jewels of this area are the rupestrian habitats of Mt. Toraggio (1,971m asl) and Mt. Pietravecchia (2,038m asl), as well as the Trans-border Nature Reserve (recently established) of Testa d'Alpe (1,517m asl).
Upper Valle Argentina, with the Municipality of Triora in the area of Arma di Taggia, has a different morphology with higher differences in height, wild naturalistic panoramas, and settlements rising along ridges or rocky spurs.
Here the landscape immediately shows thick woodlands rich in waters and game; the small country hamlets of Realdo and Verdeggia enable the connection with the areas of Mt. Gerbonte (1,727m asl), rich in natural cavities and karst gullies, and of Saccarello (2,200m asl), with its rhododendron moorlands and the large pastures scattered with ancient shelters.
The innermost area is Upper Valle Arroscia, with the Municipalities of Rezzo, Montegrosso Pian Latte, Mendatica, and Cosio d'Arroscia, in the proximity of Imperia (provincial administrative center). It is the area with the greatest mountain vocation, since it is dominated by large pastures and woodlands: this territory includes Piancavallo Summit (1,896m asl), with its herds of chamois, Mt. Frontè (2,153m asl), Mt. Monega (1,882m asl), and the charming Rezzo Woodland, the largest beech tree woodland in Liguria.