At the trail head each hiker received a trail map and two geologic maps of the recent lava flows from sources near North Sister including Yapoah Crater, Collier Cone, and Four-In-One-Cone. We hiked up the PCT to South Mathieu Lake for a rest stop. The weather was cool and clear with a gentle breeze from the west. We continued south on the PCT toward Yapoah Crater, encountering several large patches of packed show, which we were able to cross safely. We had lunch on the west side of Yapoah. Three, including Rebecca Eastwood, Darko Sojak and Tom Rundle climbed the steep trail to the Yapoah summit. We had a spectacular view of the Cascades all the way to Mt. Adams. After lunch we compared the geologic maps of the area with what we were seeing on the landscape. We continued the loop to a break at North Mathieu Lake, where Rebecca and Barbara took a long, refreshing swim. Along the trail we noted colorful species of wildflowers and a number of tiny blue butterflies.Members: Tom Rundle, Rebecca Eastwood, Lynn Meacham, Barbara Gunther, Cindy Rice, Darko Sojak, Dorene Steggell. Nonmembers: Jules Moritz.
Lava formations—photo by Rebecca Eastwood
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