NPSによれば今シーズンのハーフドーム登山は10/14までの予定（天候等の予定で延長もありうる）ということです。
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Half Dome Cables - Last date to use the cables is October 14. Trail crew will be taking down the Half Dome cables on either Oct. 15th or 16th. The plan is to do it on the 15th, but if for some reason it takes longer it may stretch into the 16th.
(M. Marschall/J. Trust - 9/25/08)