Mt Hood (3.425m) is the dominant point on the Portland skyline. From the west, the mountain rises to a classic, sharp pinnacle, but from other points the mountain has a blockier appearance. The mountain hosts twelve glaciers that provide water for the area during the dry summer months.
The Cascade Range hosts many volcanic features. The most obvious are a series of stratovolcanoes including Mount Hood.
Mount Hood has a long eruptive history. Early major eruptions remain a bit of a mystery, but evidence has been found of four major eruptions in the last 15,000 years, including three in the last 1,800 years. The last major eruption occurred in late in the 18th century, shortly before the arrival of Lewis and Clark. The eruption created a lava dome that sent numerous lahars and rockfalls down the south slope of the mountain. A lava dome forms and rocks cascade down the sides creating a large, volcanic talus slope.
The last minor eruption of Mt. Hood was in 1907, when climbers noticed a cloud of steam near Crater Rock. The mountain continues to emit sulfur dioxide and carbon dioxide from fumaroles near Crater Rock. On occasional days, when the weather is just right, condensation from the area will still form a plume visible from Portland.
Native Americans called the mountain Wy’East, the son of the great spirit.
The mountain was named Mt. Hood by English Lt. William Broughton in 1792, after British Admiral Samuel Hood.
Text by Wikipedia