Mountains & Basins Crossword

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Across
  1. 3. Spanish phrase for "big river" (two words).
  2. 6. A sunken area in a plateau found between mountain ranges.
  3. 7. Commercial center of the Upper Rio Grande valley (two words).
Down
  1. 1. A type of oil that is the source for gasoline.
  2. 2. The highest mountain in Texas.
  3. 4. Height above sea level.
  4. 5. Lacking enough water for things to grow.