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The Lützel (French: Lucelle) is a tributary of the Birs in Switzerland and France. It flows into the Birs near Laufen. For 12 km, it forms the border between Switzerland and France.

Laufen (French: Laufon [loːfɔ̃]) is a municipality and the capital of the district of Laufen in the canton of Basel-Country in Switzerland. Laufen is a principal train station for the surrounding area, connecting it to Basel.

Laufen District or Laufental District (French: District de Laufon) is one of the five districts of the largely German-speaking canton of Basel-Country, Switzerland. Its capital is the town of Laufen. Prior to 1994, it was a district of the canton of Bern, one of the seven historical districts of the Bernese Jura. In 1979, three neighbouring French-speaking districts of Bern seceded to form the new canton of Jura. Laufen was left as an exclave of Bern, wedged between Jura, Solothurn, Basel-Country, and France. In 1989, the populace voted to secede from Bern and join Basel-Country. After a transitional period of preparation, this was effected in 1994. It has a population of 20,524 (as of 30 June 2021).

Laufen railway station (French: Gare de Laufon) is a railway station in the municipality of Laufen, in the Swiss canton of Basel-Landschaft. It is an intermediate stop on the Basel–Biel/Bienne line and is served by local and long-distance trains.

Dittingen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland.

Wahlen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland.

Bärschwil is a village and municipality in the district of Thierstein in the canton of Solothurn in Switzerland.

Grindel (French: Grandelle) is a municipality in the district of Thierstein in the canton of Solothurn in Switzerland.

Chall Pass (or Challpass) (el. 747 m.) is a mountain pass in the Jura Mountains on the border of the cantons of Solothurn and Basel-Country in Switzerland. The pass road links Metzerlen and Röschenz or Laufen on the Swiss common main road number 274. The pass got his name from the mountain Challhöchi; chall is Swiss German for the German word kahl (in the meaning of bare, without forest); Höchi Swiss German for Höhe (height).

Blauen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland.

Zwingen railway station (German: Bahnhof Zwingen) is a railway station in the municipality of Zwingen, in the Swiss canton of Basel-Landschaft. It is an intermediate stop on the Basel–Biel/Bienne line and is served by local trains only.

Zwingen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland.