Of the subsequent Bell Beaker culture (2700–2100 BC) several regions of origin have been postulated, notably the Iberian peninsula, the Netherlands and Central Europe.  They introduced metalwork in copper, gold and later bronze and opened international trade routes not seen before, reflected in the discoveries of copper artifacts , as the metal is not normally found in Dutch soil. The many finds in Drenthe of rare bronze objects, suggest that it was even a trading centre in the Bronze Age (2000–800 BC). The Bell Beaker culture developed locally into the Barbed-Wire Beaker culture (2100–1800 BC) and later the Elp culture (c. 1800–800 BC),  a Middle Bronze Age archaeological culture having earthenware pottery of low quality as a marker. The initial phase of the Elp culture was characterised by tumuli (1800–1200 BC) that were strongly tied to contemporary tumuli in northern Germany and Scandinavia, and were apparently related to the Tumulus culture in central Europe. The subsequent phase was that of cremating the dead and placing their ashes in urns which were then buried in fields, following the customs of the Urnfield culture (1200–800 BC). The southern region became dominated by the related Hilversum culture (1800–800 BC), which apparently inherited cultural ties with Britain of the previous Barbed-Wire Beaker culture.
Vanderbilt Motor Parkway:
This path follows the route of a very old highway, now no longer used by autos. It's generally pretty shady and quiet. However, the path pavement is often dubious, and the tree cover means that there can be real problems with twigs and such. Consequently, this is not a location that new skaters should attempt. The Vanderbilt path roughly parallels Richland Ave. Access points can be found in Cunningham Park, near the intersection of Hollis Hills and Richland, and at the south end of Alley Pond Park.