you can die on the dome
more at link ... http://www.yosemitehikes.com/yosemite-valley/half-dome/half-dome.htm
How many people have died on Half Dome?
There have been more than 20 deaths on Half Dome itself, and if you count the trail leading up to Half Dome, the number leaps to more than 60.
People have died on Half Dome from a variety of causes: falling off the cable route, heart attacks while climbing the cables, lightning strikes, failed base jumps, climbing accidents, and even a few suicides. There were two deaths on Half Dome in 2011: a hiker fell off the face of the dome on August 22nd, and another fell while descending the cable route on July 31st after a rainstorm had made the route even more slippery than usual. In June of 2009, a San Ramon Man fell while trying to descend the cables during stormy conditions. In June of 2007 a Japanese climber fell to his death while ascending the cables, and another hiker fell to her death the same year trying to climb the route when the cables were down. The cable route is extremely dangerous; please don't do it unless you're well prepared. These tips on surviving the cable ascent are a good starting point.
Deaths on the trail to Half Dome, rather than on Half Dome itself, are usually above Nevada or Vernal Falls, and usually occur when someone wades into the the water above the falls or slips off rocks into the water and gets swept away. In many cases, their bodies have never been found.
on a side note we just climbed the dome last week ... the cables were down so we had to descend hand over hand ... i suspect that with hiking shoes and packs, accidents can easily happen on crowded days ...