Long Distance Trade from El Portalon (Alday et al, 2015)

Figure S11. Different views of the button shaped like a spindle with a transversal perforation represented in Figure 7(f). It is
similar in shape to the V-perforated tortoiseshell buttons found in some other sites from French Atlantic facade and Northern
Iberian Meseta. Made out of bone. Scale is 1 cm.

This paper covers really two chunks of the history of Portalon; the Early Neolithic and a later period containing Beaker associated materials, these time frames being when materials are sufficiently available.  The materials are laid out on a regional scale by item showing that this place was far from isolated.

It's probably worth keeping this in mind as genetic studies progress.  You'll remember that there is now an individual from Portlon from the LN that is R1b and this is less than 100 miles (as the crow flies) from a similar pastoralist of El Torcs from the EN.

From the paper:

At this time in Europe the sociocultural context encourages supra-regional relationships (the Bell Beaker culture is a good example), and the great value of the metals and the need to locate outcrops are another incentives. Furthermore, it is highly suggestive to relate these cultural dynamics to the latest hypotheses derived from genetic studies, which highlight the importance of post-Neolithic demographic processes and the current characterization of the gene pool of recent Europeans (Brandt et al., 2013; Kind, 2010; Ricaut et al., 2012). In this situation, where local and foreign products are mixed (as is the case of El Portalón), it is difficult to recognize whether the ideas, objects or persons (or a combination of the three) are involved. And we should alsoremember the complexity of the funerary world at this time (reusing dolmens, building burial mounds, digging graves and using caves). The complexity of these rituals and the richness and variety of grave goods help us to understand the awl made from a human bone founded at El Portalón, a symbolic element in a time of great social development.

Figure S9. Prismatic V-perforated buttons from El Portalón; (a) and (b) also represented in Figure 7(a) and Figure 7(b) respectively.  Scale is 5 cm. (a) ATP 01-10; (b) ATP 01- 11; (c) CM 5380; (d) ATP 07-10; (e) ATP 07-11.

Alday, A. et al. (2015). Proofs of Long-Distance Relations between Central Europe and Inland Iberian Peninsula during Neolithic and Bronze Age. Evidences from the Material Culture of the Site of El Portalón (Sierra de Atapuerca, Burgos, Spain). Advances in Anthropology, 5, 294-323. http://dx.doi.org/10.4236/aa.2015.54023

Abstract

El Portalón of Cueva Mayor is one of the present-day entrances to the Cueva Mayor-Cueva del Silo karst system located in the Sierra de Atapuerca (Burgos, Spain). It is an important archaeological site with extended Holocene occupation which has been subjected to a number of excavations since the nineteen seventies. From its significant collection of bone and antler industry, for this work, we have chosen artefacts indicating local production and others evidencing contact between this part of the Iberian Peninsula and other areas of the Mediterranean Basin. Wishing to emphasise this symbiotic relationship, we have likewise presented a special collection of Neolithic Boquique
pottery. The data confirm that, far from being occasional, the relationship of the groups
living in the area around the Atapuerca Mountains continues unbroken for several cultural episodes.