Round the toe

The Bözberg Rail Tunnel is a railway tunnel in the Swiss canton of Aargau. The tunnel takes the Bözberg railway line of the Swiss Federal Railways under the Bözberg Pass between Effingen and Schinznach-Dorf. It is 2,526 metres (8,287 ft) long, and carries twin standard gauge (1,435 mm or 4 ft 8 1⁄2 in) tracks electrified at 15 kV AC 16 2/3 Hz using overhead catenary.

The Bözberg Road Tunnel is a motorway tunnel in Switzerland. The tunnel lies under the Bözberg Pass between Frick and Baden, in the canton of Aargau, and forms part of the A3 motorway from Basel to Sargans. It is 3,705 metres (12,156 ft) long, and was opened in 1996.The tunnel runs roughly parallel to the Bözberg Rail Tunnel.

Linn is a former municipality in the district of Brugg in canton of Aargau in Switzerland. On 1 January 2013 the former municipalities of Gallenkirch, Linn, Oberbözberg and Unterbözberg merged to form the new municipality of Bözberg.