Chuenisbärgli is a World Cup technical ski course (and a hill) in Switzerland at
Adelboden 
in Bernese Oberland, opened in 1955.
The track runs on natural terrain and is used only for annual World Cup competitions, traditionally in early January. It is one of the oldest and most classic slopes in the circuit.
It is considered the most prestigious giant slalom in the world and among the most demanding, along with Alta Badia and Kranjska Gora.
History
In 1955 competition called "Internationalen Adelbodner Skitage" (International Adelboden Ski Days) started with slalom, giant slalom joined in 1958, with last slalom held in 1961.
In the early days of the World Cup, there was basically only one giant slalom, initially on two days (Monday 1st run / Tuesday 2nd run) and then both runs on Tuesday.