Deleted Finder from Dock - how to put it back?

Hi everyone,

I was trying to open an application today and somehow managed to make Finder disappear from the Dock. To be more specific, I can see my Finder icon on my Desktop UNDER the Dock, half hidden by the Dashboard icon, but it's not clickable at all. The only way I can access Finder at the moment is to click on my Desktop and then select "Open New Window". I'm not sure how I can put the shortcut back - any suggestions?

Thank you!