1. ぐんとう   sea bed   archipelago   swamp   forest, woods   Hint Half-n-half Clue   2. かざん   stream   volcano   spring   sea bed   Half-n-half Clue   3. いけ、せんすい   territory   stream   coast   pond   Half-n-half Clue   4. ちきゅう   trench   creek   globe   hill   Half-n-half Clue   5. ぬまち   sea bed   marsh   globe   forest, woods   Half-n-half Clue   6. ほらあな、しょうにゅう   volcano   creek   forest, woods   cave   Half-n-half Clue   7. おがわ、いりえ、   creek   summit, top   sea bed   cave   Half-n-half Clue