It divides the exits from the bay into two, the Bocca Grande, about 16 m.
wide, between Capri and Ischia, and the Bocca Piccola, 3 m.
At the mouth of the Arno, joined to the city by a steam tramway, is the seaside resort of Marina di Pisa, also known as Bocca d'Arno, a well-known centre for landscape painters.
8,521 Bocca di Cadlimo (Airolo to the Lukmanier Pass), foot path 8,340 Valserberg (Hinterrhein to Vals Platz), bridle path 8,225 Safierberg (Splugen to Safien Platz), bridle path.
Bocca di Tuckett (Campiglio to Molveno), snow Passo di Val Morta or del Diavolo (Val Seriana to Sondrio), foot path.