"Tralla La" is a Scrooge McDuck comic book story by Carl Barks.
"Tralla La" begins with Uncle Scrooge having a hard day at his office, and it doesn't get better when he attempts to walk along the street to relax; everyone he meets wants some of his money.
Tralla La may be such a place, where a peaceful society without a monetary system is rumored to exist.
Scrooge and his nephews, who are there to support his healing, finally locate the mythical place in a deep valley high in the Himalayas and arrive by parachute.
The bottle caps he discards are considered rare treasures in Tralla La and become the basis of a new monetary system.
In a 1981 interview, Barks said, "The nerve medicine [in Tralla La] was a running gag to help pull parts of the story together.