Three SistersThe Three Sisters are three volcanic peaks of the Cascade Range, located near the town of Sisters, Oregon.
The North Sister is oldest, with towering rock pinnacles and brilliant glaciers. It has not erupted since the late Pleistocene.
The Middle Sister is the smallest and most poorly studied. It is the second youngest. No reports on its potential for eruptions can be made.
In 2000, a satellite discovered that there was a deforming uplift near the South Sister. This could mean that she is awakening. Depending on the type, the eruption could either result in quiet emissions of lava, of the town being buried, or even a total levelling of the mountain.
The Sisters were named Faith, Hope, and Charity by early settlers.
The "Three Sisters" are also the three basic agricultural crops of Native Americans in North America, squash, maize (or corn), and climbing beans.