The term 'Sierra ___ (California Range)' is a crossword puzzle solution that can be filled in with two words: 'Nevadas' and 'MADRE'. The Sierra Nevada mountain range is a major mountain range in the western United States, located in the states of California and Nevada. It stretches for 400 miles from its northernmost part in Lassen County, California, to its southernmost part in the Inyo County, California. The Sierra MADRE range is a mountain range located in Mexico, stretching from the U.S. border in the north to the state of Oaxaca in the south. It is part of the Trans-Mexican Volcanic Belt, a chain of volcanoes and mountains that extends from the U.S. border to Guatemala.