The Vertical navigation module enables you to display your page structure to visitors on any page of your choice and allows the page structure to expand vertically, as opposed to the horizontal drop downs in the main navigation menu. You can add a Vertical navigation module by selecting Vertical navigation under the category Page navigation in the Add module overlay.
Only shows on desktop and tablet
The Vertical navigation module only shows on desktop and tablet viewports and is therefore disabled in mobile view by default if you add the module.
A vertical navigation is particularly useful when you have several subpage levels on your website as it offers visitors a full overview of the website's page structure.