dsiable vertical dragging, but not horizontal

Hello,

I want to know if is possible to disable dragging for vertical movement, but not disable dragging for horizontal movement.

I have a map made by an image, and I wanna show the full height image on the page (1200px), but if you do this on mobile it became dificult to scroll other parts of the page.
If I disable dragging, scroll on the page becames easier, but the width of the image cannot be seen (900px)…

Thank you!