[1] Kirke's notable contribution to extreme sports was initiating what is considered the first modern bungee jump in 1979, off the Clifton Suspension Bridge in Bristol, England.
[1][2][3] This event drew inspiration from the land diving ritual of Vanuatu and involved an elastic rope used in military applications.
These included unconventional stunts such as skiing with a carousel horse in the Swiss Alps, flying an inflatable kangaroo suspended by balloons over the English Channel, skateboarding in Pamplona's running of the bulls, and organizing a meal on the rim of an active volcano in Saint Vincent.
[1] Kirke's personal life experienced a significant shift after the death of his girlfriend in a bus accident, leading him to leave his job and return to Oxford.
[1] This change marked his entry into a lifestyle characterized by adventurous and often perilous endeavors.