FRESNO, Calif. — Gripping tiny slices of sheer rock and hoisting himself up 3,000 feet with only his strength, Adam Ondra quietly inched his way up one of the world’s most challenging rock walls and into the record books, a spokesman for the climber said Tuesday.

Ondra, a 23-year-old from the Czech Republic, took eight days to finish the free-climb up the Dawn Wall of the famed El Capitan in California’s Yosemite National Park.

Adam Ondra celebrates on the sheer granite 3,000-foot wall, after pulling himself up with just his fingers and toes. Associated Press/Heinz Zak, Black Diamond Equipment

Adam Ondra navigates a pitch on the Dawn Wall of El Capitan in Yosemite National Park, Calif earlier this month. The Czech climber took the most difficult route to the top of one of the world's most challenging rock faces. Associated Press/Heinz Zak, Black Diamond Equipment

He completed the second-ever free ascent up the wall Monday, said John Dicuollo, a spokesman for Black Diamond Equipment, which sponsors Ondra.

Nearly two years ago, U.S. climbers Tommy Caldwell and Kevin Jorgeson were first to chart and conquer the route, a feat that took the pair 19 days.

“For him, it was a dream come true,” Dicuollo said of Ondra.

Unlike climbers who need more elaborate equipment, free-climbers use their strength and ability to grasp tiny cracks and lips on the granite rock with their fingertips and toes. They use ropes and harnesses only for safety to catch a fall.

Throughout the climb, Ondra took to social media to post about the cold, soaking rain and the pain from the granite wearing down the skin on his fingers.

“Hard to find the words to describe how I feel,” he wrote on Instagram as he neared the top. “We made it up to the Wino Tower and no more hard pitches guard my way to the top. I could not have asked for a better day.”

Ondra, pictured in jeans and a T-shirt pumping his arms after completing a difficult stretch of the climb, was not available for comment. Dicuollo said Ondra’s cellphone was off as he celebrated by resting.

Ondra completed the climb in his first visit to Yosemite Valley. He arrived in mid-October, spending several days practicing some of the wall’s most harrowing sections, before launching the formal climb on Nov. 14.

To rest, Ondra and his team pitched tents suspended on the wall’s sheer face towering hundreds of feet above Yosemite Valley. The park is known for attracting all sorts of adventurers from around the globe.

Ondra had already distinguished himself as the first to hold two world championships in climbing, his sponsors said. Earlier this year, he also completed his college degree in business management.

He closely monitored Caldwell and Jorgeson’s accomplishment in early 2015, drawing on inspiration from their climb to attempt his own, his sponsor said.

Yosemite climber and historian Ken Yager said there is no doubt that Ondra is the strongest climber alive today. Yager, however, credits Caldwell for taking years to chart the path up the Dawn Wall, the most difficult of several routes up El Capitan.

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