Huayna Potosí North-South Traverse. British climbers Simon Abrahams, Jim Hall and Tony Matthews made a traverse of Huayna Potosí, starting on June 24 on the north ridge, moving across the west face to the northwest ridge and on to the lower north summit. They then traversed along the narrow ridge to the main south summit and along the crest of the south ridge to complete the climb at Laguna Zongo on June 27.