Vocabulary: free climbing (n), cliff (n), to achieve (v), harness (n), to suspend (v), flat (adj).
Two free climbers have climbed to the top of El Capitan, a cliff in Yosemite National Park, USA. They are the first people in history to achieve this. It took them two weeks to climb the 914 metres to the top.
Freeclimbers do not use equipment. However they used harnesses to stop themselves from falling and they slept in tents suspended from the cliff.
The cliff is almost flat, so the free climbers had a lot of difficulty: they waited until night to climb as the rock was cooler, and they had to stop many times because the skin on their hands was damaged.