The short answer to your question (as far as I have been able to find) is no.
When I teach about Jericho I am always looking for the right graphics. Here are three pages that I found on the web that help me show the walls:
I frequently use images.google.com and usually have found it necessary to add Bible to the search terms so as to not get as many stray images.
That being said, I do not want to minimize the value of the images in many of the Accordance modules, including Sacred Bridge. If you have not already done so, choose "New" then "Search All" from the File Menu, then drop down the blue "English" to "image" and type in your term. It will give you all the images in all your modules.