Output raw URL of image TV

I've come back to update an old Evo site. I have an Image TV/widget - [*thumbnail*] - but in a certain situation I need the raw URL without the <img> tag from the widget format "Image". How can I output the URL of from the image TV unprocessed? I'd rather not have to change the widget format because that seems like a site-wide change, and I only need the raw URL output in one instance. I'm concerned it'll need a snippet to access the data directly, but that seems heavy-handed.

Thanks.