盆地

1. Origins, structure, and basic meaning

• Structure: The landform noun 盆地 (ぼんち) is a basin, a lower area surrounded by mountains or higher ground.
• Basic usage: It appears in 山に囲まれた盆地, and a viewpoint may overlook 盆地全体.

2. Common pitfalls and similar expressions

• Land enclosed by higher ground
  • The key is the geographic relation of lower land enclosed by higher terrain, not merely a bowl-like appearance.