Acne is a common skin disease that causes pimples. Pimples form when hair follicles under your skin clog up. Most pimples form on the face, neck, back, chest, and shoulders. Anyone can get acne, but it is common in teenagers and young adults.
Horsetail Falls â Considered to be the epitome of the horsetail form by the World Waterfall Database, Oregon's own Horsetail Falls is a must-see on any Columbia River Gorge trip, found along the Historic Columbia River Highway just east of the Oneonta Tunnel.
For the adventurous, Yellowstone's southwestern Cascade Corner contains a large number of spectacular waterfalls. Union Falls, Terraced Falls, Colonnade Falls and Dunanda Falls are among the best. Terraced Falls can actually be reached by a short hike, but the others require hikes of over 10 miles one way.