English: These climbers are 25% of the way up. The ascent has been completed in one day, but most climbers take 2-3 days. Free climbing, without the aid of pitons, was essentially pioneered in Yosemite in the 1950s and 1960s. These climbers appear to be following a crevice on this pitch of climbing.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue