Slack Rope

Walking on the Slack Rope is a gymnastic skill, like Tight Rope walking, and is often used by acrobats, clowns and comedians as a circus or vaudeville act. According to Bosman, 1928[1]: p.227), it was particularly popular in the mid-1800s in South Africa. See for example Monsieur Dupree (1833).

See also: Tight Rope walking (or funambulism).

Sources

https://en.wikipedia.org/wiki/Tightrope_walking

https://en.wikipedia.org/wiki/Slacklining