Link Werpeloh 1 Passage Grave Nucleus Nov 10, 2018 Route of Megalithic Culture – Site 18a: Steenhus at Klöbertannen 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.