Forums Splitboard Talk Forum Splitboarding Mt. Rainier Reply To: Splitboarding Mt. Rainier April 28, 2006 at 3:55 am #588478 HammBone 17 Posts When did you encouter the sun cups of death? We are planing on starting our climb on June 30, and ending around July 3. We are hoping that this way we can still get into good snowpack, but not have the really bad snow.