I found coming. .down the cable route more scary than going up, as you are facing out into a lot of space and relying on the friction from your gloves on the cable to stop you plunging head first into the void. An iconic area, should be on every one's list for at least one visit in your lifetime. I stayed in one of the tent cabins, not much protection against the bears that came scavenging round the camping area at night. I believe half the Dome was shunted away by a large glacier umpteen years ago. Must have been an amazing sight.