Hallandsås is a horst on the border between the Swedish counties Skåne and Halland

Halland

' is one of the traditional provinces of Sweden , on the western coast of Sweden. It borders Västergötland, Småland, Scania and the sea of Kattegat.-Administration:...

.

It is part of a geological formation that includes an island in the sea outside the village of Torekov

Torekov

Torekov is a locality situated in Båstad Municipality, Skåne County, Sweden with 888 inhabitants in 2005. It is still a fishing village but it is today known as a summer resort....

 near Båstad

Båstad

Båstad is a locality and the seat of Båstad Municipality, Skåne County, Sweden with 4,793 inhabitants in 2005.-Geography:The town of Båstad is located in a sheltered bay with the Hallandian ridge stretching behind it...

 called Hallands Väderö. The geological formation continues with the Linderödsåsen

Linderödsåsen

The Linderödsåsen is a ridge, geologically a horst, in the province of Skåne in southernmost Sweden. It lies at the edge of the Baltic shield, in the Tornquist zone, and continues with the Hallandsås in north western direction towards the Kattegat....

 in Skåne. It was formed during the Late Cretaceous

Late Cretaceous

The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...

 period 80 million years ago. It reaches its highest point at Högalteknall near the village of Hasslöv at 224 metres. In modern times it is most noted for the project with serves to create a tunnel through it to speed up railway communications, the Hallandsås Tunnel

Hallandsås tunnel

The Hallandsås Tunnel , also known as the Hallandsås Ridge Tunnel or Scanlink, is a railway tunnel under construction in Sweden. It will go between the north and the south side of the Hallandsås. The planned length is . It will be utilized by the West Coast Line, on the section between Ängelholm...

 and the two skiing centres which were opened during the 1980s. In older times it was most noted for being a dangerous route for the postal services which often were robbed by people in the area. The "Snapphane

Snapphane

A snapphane was a member of a 17th century pro-Danish guerrilla organization that fought against the Swedes in the Second Northern and Scanian Wars, primarily in the former eastern Danish provinces which in the course of these wars became southern Sweden....

" guerrilla movement of the late 17th century also operated out of the woods on the horst.