The coast contains sufficient estuaries, inlets, rivers, islands, swamps, and marshes to have been then inaccessible to those not familiar with the terrain, such as the Romans, who considered it unknown, inaccessible, with a small population and of little economic interest.
Rannikul on piisavalt estuaare, abajaid, jõgesid, saari, soid ja luhtasid, mis siis olid maastikuga mittetuttavatele ligipääsmatud, nagu roomlastele, kes pidasid seda tundmatuks, ligipääsmatuks, vähese rahvastiku ja väikese majandusliku huviga kohaks.