Got glacial with Grayl! My water bladder only holds 2.5 liters of water and I knew I was going to need way more than that to summit South Sister, so my trusty Grayl came in handy. There’a a glacial pool before you start the trek up the red mile, so we used the Grayl to filter ice cold glacial water for refills 😋 . . . . . #oregon #hiking #hikeoregon #theredmile #redmile #southsister #grayl #thegrayl #filteredwater