- A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers.
- Liberty Bell Mountain (Wikipedia)
Liberty Bell Mountain is located in the North Cascades, State of Washington, United States, approximately one mile south of Washington Pass on the North Cascades Highway. Liberty Bell is the most northern spire of the Liberty Bell Group, a group of spires that also includes Concord Tower, Lexington Tower, North Early Winters Spire, and South Early Winters Spire.