Complex sentence: Altes Land is an area of reclaimed marshland south of the river Elbe in Hamburg and Lower Saxony around the towns of Stade, Buxtehude, Jork and the "Samtgemeinde" of Lühe.
Split into simpler sentences: Altes Land is an area of reclaimed marshland straddling parts of Lower Saxony and Hamburg. The region is situated downstream from Hamburg on the southwestern riverside of the Elbe around the towns of Stade, Buxtehude, Jork and the "Samtgemeinde" of Lühe.