1. hill   koyama, oka   kazan   kaigan   hyouzan   Hint Half-n-half Clue   2. trench   mizo   nagare   gake, zebbeki   ike, sensui   Half-n-half Clue   3. iceberg   numachi,teishitsuchi   hyouzan   kawabata, kishibe   nouhara, hatake   Half-n-half Clue   4. creek   keshiki, fuukei   numachi   ogawa, irie   chikyuu   Half-n-half Clue   5. stream   gake, zebbeki   numachi,teishitsuchi   nagare   kawabata, kishibe   Half-n-half Clue   6. volcano   touge   numachi   kazan   inaka,chihou   Half-n-half Clue   7. rainforest   touge   mizo   nettai-urin   inaka,chihou   Half-n-half Clue