YOSEMITE VALLEY, Calif. —

A little over a week since the Oct. 1 shutdown of the federal government, videos and photos have surfaced on social media showing visitors to Yosemite National Park engaging in dangerous and illegal behaviors, including BASE jumping from El Capitan and climbing Half Dome’s cables without permits.

“It’s like the Wild Wild West,” said John DeGrazio, founder of the tour company YExplore Yosemite Adventures.

BASE jumping from the park’s majestic granite monoliths and illegal climbs up Half Dome’s famous cables aren’t anything new. The jumps have been happening since the 1960s, and in his more than 200 times summiting Half Dome , DeGrazio has regularly encountered hikers without permits who are hoping to score somebody’s extra along the trail.

“This is differen

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