다가 보이다

spot it on the way

"-다가" marks doing one thing and something else happening part-way through, with 보이다 "be visible" or its other reading 보여주다 "show". Spotting: we saw it while driving past and stopped, how about we eat it if we spot one on the way, you can see this one as you go by. Showing: 조금 있다가 보여드리고요, "I'll show you in a moment" — here 있다가 is "after a while", so the phrase means later rather than mid-action.