行ゆき当あたる

godan verb (-ru), intransitive verb

come across; run into; hit upon

Describes encountering something unexpectedly while moving forward, or reaching an impasse. Often used for physical obstacles, dead ends, or chance discoveries.

• 山やま道みちを歩あるいていると、小ちいさな滝たきに行ゆき当あたった。

  While walking along the mountain path, I came across a small waterfall.

• 交こう渉しょうは難なん航こうし、ついに行ゆき当あたってしまった。

  The negotiations hit a snag and finally reached a deadlock.