Custom Header Image
As a matter of course the theme supports the custom header image feature of WordPress. The custom header can be managed under WP-Admin > Appearance > Header. You can upload a new image or remove the header image completely if not needed.
The theme defines a width and height of the image to fit perfectly into the theme. However, after uploading your image WordPress allows you to crop your image, choose your own height and pick out the right part of it to show up.