GIANT Icons on Desktop

Hi. The icons on my 18.04 desktop suddenly got massive. I'm sure they won't this big when I first installed a couple of weeks ago. I'm sure they're not supposed to be this big, are they?

Anyway, how can I make them smaller?

This is on a Dell latitude 2120, 1366x768 resolution.

open caja and open "edit/preferences" and check you icon size is set to the default of 100%

If it is, then navigate to your desktop inside Caja and click on "view/zoom out" until you desktop icons are the correct size