Hayrick Butte

Hayrick Butte is a tuya, a type of subglacial volcano, in Linn County, Oregon. Located in the Willamette National Forest near Santiam Pass, it lies adjacent to the cinder cone Hoodoo Butte, which has a ski area. Hayrick Butte likely formed when lava erupted underneath an overlying glacier or ice sheet, producing the flat top with near-vertical walls along the ice-contact margin as the lava cooled and hardened. Hayrick Butte has a nearly flat plateau about 0.5 miles across and steep walls rising about 700 feet above its surroundings. A cartographer accidentally switched the names for nearby Hoodoo Butte and Hayrick Butte; the word "hoodoo" usually refers to rock piles and pinnacles like those observed at Hayrick Butte.

Compared to Hoodoo, Hayrick is less popular for recreation, though it can be climbed, and there are hiking, snowshoeing, and snowmobile routes surrounding the butte. Its north-facing slope has subalpine forests with mountain hemlock and fir, which are common in the Cascades.

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