The Happy Valley set was largely a group of hedonistic British and Anglo-Irish aristocrats and adventurers who settled in the Happy Valley region of the Wanjohi Valley, near the Aberdare mountain range, in the colonies of Kenya and Uganda between the 1920s and the 1940s. From the 1930s the group became infamous for its decadent lifestyles and exploits following reports of drug use and sexual promiscuity.[2]