I climbed to the top of half dome with two of my friends in August of 2020. This post captures my best tips on what to expect and how to prepare.  Half Dome Half dome, Yosemite’s most iconic symbol, rises to 8,800 feet above sea level, or nearly 5,000 feet above Yosemite Valley. Until 1875, Half Dome was deemed inaccessible by man and even today considered the most strenuous and most dangerous day hike in all of the U.S. national parks.  Why climb it do you ask? The hike requires excellent physical and mental strength, and aside from the sense of accomplishment of reaching new heights, you will get to see some magnificent Yosemite views along the way and from the very top of course. It is worth it! The last 400 feet to the summit involve climbing using two metal cables. This very last part is not recommended to anyone with fear of heights. The cables are typically up before Memorial Day and come down in Mid October, so that effectively limits when you can go. Obtaining a permit In 2010