BASE jumping owes its contemporary origins largely to Carl Boenish, who in the late 1970s led a group of skydivers off El Capitan, the iconic granite wall in Yosemite National Park.

NPS has banned BASE jumping for decades. That hasn’t stopped people from visiting parks and leaping off some of the most iconic rock slabs in the country.

A group of base-jumping advocates in the US have been lobbying to decriminalise the sport. Photo / 123rf. Every year, millions of people visit America’s national parks.Some seek recreation ...