沼地

1. Origins, structure, and basic meaning

• Structure: 沼地(ぬまち) combines 沼, marsh or swamp, with 地, land.
• Basic usage: It describes wet marshy terrain where feet can sink, or a path crossing such land.

2. Common pitfalls and similar expressions

• を marks the space crossed
  • を in 沼地を横切っている marks the area crossed by the boardwalk. 横切る(よこぎる) means crossing from one side to another.
• The expression 足を取られる
  • 沼地に足を取られやすい means that one's feet can easily sink or become caught, hindering movement. やすい expresses how readily this can happen.