Topography

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Across
  1. 4. A natural feature on the Earth's surface
  2. 5. Height above a specific reference point, often sea level
  3. 7. Short for maps showing hills and valleys
  4. 10. The cardinal direction opposite to south
  5. 14. Always equidistant, never meeting
  6. 15. Lines depicting the shape or form of something
Down
  1. 1. A long, flowing body of water
  2. 2. Circles with a common center
  3. 3. The space between two points
  4. 4. Straight marks connecting two points
  5. 6. Standing or pointing straight up and down
  6. 8. A place to play and enjoy nature
  7. 9. The cardinal direction opposite to north
  8. 11. A large overflow of water that submerges land
  9. 12. Round shapes with no corners
  10. 13. A reference point on a map