She swears it was four pages, not four stamp areas. I know the Republic of Zimbabwe visa takes four stamp areas (one full page).

What countries require two adjoining?

And another, related question, the last four pages of a US passport are for "Amendments and Endorsements". Can those be used for visas?

@:-) I just thought of a possible answer from leafing through my own passport. If it were a tour company statement, rather than a single country requirement the following could be true:

2 stamp areas for the UK (coming and going)
1 page for a South African visa and stamps.
1 page for the Zimbabwe visa
1 stamp area for US immigration.

I asked her about this and she concedes that it may have been a trip requirement, rather than a country requirement, so I think the issue may be resolved.