Why can't I find certain collections in my admin system?

Hi,

I have a page appearing in shop /collections/types. However this page does not exist anywhere in the admin system as best as I can tell.

I’ve tried amending the collections template to show the ID of the collection so I could just go to the ‘type’ collection manually in the admin, however it does not have one, nor does it have any other kind of attribute (running ‘{{ collection | json }}’ returns null where on other collection pages it does not).

How can I go about removing or editing this page?

Thanks in advance!