Extreme sports

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Across
  1. 2. involves hanging under a simple aircraft with no engine that you control by moving your body.
  2. 4. the sport or activity of diving under water without the use of breathing apparatus, especially in deep water.
  3. 7. involve riding over rough tracks ,rocks and hills.
  4. 10. involves climbing down a large rock or tall building using your hands to control a rope and your feet to guide you.
  5. 13. The activity of jumping from a great height with an elasticated cord attached to the ankles.
  6. 14. the sport or pastime of sliding downhill on a snowboard.
  7. 15. float on the crest of incoming waves without using a board.
Down
  1. 1. involves a small canoe that you move with a single paddle
  2. 3. the sport or activity of climbing glaciers.
  3. 4. an activity in which people move quickly around buildings and objects.
  4. 5. the sport or pastime of riding on a skateboard.
  5. 6. the sport or activity of riding on water on a sailboard.
  6. 8. the sport or activity of climbing rock faces.
  7. 9. the sport or activity of jumping from an aircraft and performing acrobatic.
  8. 11. a parachute jump from a fixed point.
  9. 12. tower running [vertical marathon] inside a building using the stairs.