4 Business Lessons I Learned on Summer Vacation, Trekking the Andes to Machu Picchu Posted by July 27, 2016 Leave a comment on 4 Business Lessons I Learned on Summer Vacation, Trekking the Andes to Machu Picchu A P.R. exec climbed 13,000 feet to gaze upon this Incan masterpiece and took what she learned back to her business.