Rock formations in zion

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Across
  1. 3. ,made of volcanic ash
  2. 6. , what is a famous tribe
  3. 7. , it is made of tidal flaps
Down
  1. 1. , it is made of red sandstone
  2. 2. , it has mudstone in it
  3. 4. , it is made mostly of limestone
  4. 5. , made of shale