Link Klein-Stavern 1 Passage Grave Nucleus Nov 12, 2018 Route of Megalithic Culture – Site 14: Megalithic Grave at the Osteresch (14e) 330 kilometres of scenic route lead you to 33 exciting archaeological sites through Northwest Germany. On your way you will find more than 70 Neolithic (3.500 to 2.800 B.C.) megalithic tombs.