Anyone coming through Mammoth on their way to Whitney and hoping to go down to Devil's Postpile will likely have to wait at least another week, with estimated opening on 6/24. As of now, they're only a mile or so past the Minaret Summit area and still have 4-8' of snow over the road down the slope, with several avalanche chutes to clear, as well.
That's also the access to the Agnew Meadows trailhead up to "my" mountain,
Mt. Ritter.
Details on the
Park Service site.