A chain of mountains is a series of mountains or hills that are connected together. The term can refer to a single mountain RANGE, or multiple ranges that are connected together. In this crossword, the solutions for the term 'chain of mountains' are RIDGE (5 letters), SIERRA (6 letters), and RANGE (5 letters). A RIDGE is a long, narrow elevation of land that runs between two valleys or along the top of a mountain. A SIERRA is a mountain RANGE with a jagged, saw-toothed outline. A RANGE is a group of mountains that are close together and form a line.