12-Year-Old California Boy Denied Permit To Climb Mount Everest According to Rock and Ice, 12-year-old Tyler Armstrong was denied a permit to climb Mount Everest, which ended his dream of becoming the youngest person in the world to summit Mount Everest.ย While waiting to hear back on his permit application on the Tibetan side, Tyler trained for theย trek, assuming that his application would be accepted. Tyler is aย sixth-grader from Yorba […] Industry News Chris Wallner | April 19, 2016 1 Comment