Using "Upload Image"s from Markdown

I have an About page where I’m trying to display an image in Markdown using the ! Markdown tag. Where do Upload’ed Images get stored in Backlight? I can’t seem to find them on the filesystem.

I go to Designer > Templates > Uploaded Images on the menu. On that page at the bottom you will see a button for Upload New Image. From there I just use the image address assigned by BL to insert onto my web pages where I want them placed. When you click on an image on that page you will see info about the image including the BL assigned url address - that is what I insert into the web page.