toshiさんが下に投稿してくださってますが、まだ残雪が多いためハーフドーム登頂開始はしばらく延期です。今週末と来週末の登山パーミッションを持っている方は返金だそうです。
日: 2010年5月21日
HD Trail
The Half Dome cables will not be in place over the May 28-31 permit period. Cool, wet conditions have persisted well into May, resulting in a heavier-than-usual and slowly-melting snowpack. As a result, the subdome, below the Half Dome cables, is covered in snow. A slip and fall from the subdome’s steep snowfield could cause serious injury or death. For the safety of employees setting up the cables and hikers, the cables will not be put up until conditions improve. We will monitor conditions over the next two weeks and issue an expected opening date as soon as possible. If you have a permit for May 21-23 or May 28-31, you will receive a refund.