On July 1, about an hour before sunset, a wilderness law enforcement ranger on a routine backcountry patrol encountered three separate parties, seven hikers total, all lost while facing oncoming darkness. They were in the Sunrise Pass area south of Tioga Road, in the general area of Tuolumne Meadows.
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It is nearly impossible to follow a trail under snow cover. There's no way I'd attempt to get to Clouds Rest without a GPS track to follow and ALWAYS with a headlamp in my pack!
Glad everybody got out ok.