yawning

Often used metaphorically for a large difference between two groups, ideas, or situations.

Similar to 'yawning gap', often emphasizing an even wider and more significant difference.

大きく口を開けた裂け目

Refers to a very deep, wide crack in the ground, can also be used metaphorically.

地面にある非常に深くて広い亀裂を指し、比喩的にも使われることがあります。

Refers to a very large, deep, and often dark opening.