The Moesian Limes (Latin: Limes Moesiae) is the modern term given to a collection of Roman fortifications between the Black Sea shore and Pannonia, present-day Hungary, consisting primarily of forts along the Danube (so-called Danubian Limes) to protect the Roman provinces of Upper and Lower Moesia south of the river. In addition the term Limes Moesiae may be used to include many other linked lines of defence were established in the region in different periods and later abandoned in favour of others depending on the military situation.