Some maps have insets with a cultine but no gcp's

[peer35]

https://raw.githubusercontent.com/vu-geoplaza/allmaps_scripts/main/annotations/ubvu_2428.json
https://geoplaza.georeferencer.com/maps/f85f5d7a-a6a0-4b06-b9a3-6e34ef2e9f89/view