Where were these located precisely? Whose land are they on, and were any people operating them?

The Guardian says they have this information, but they choose to leave it out?

europa.eu at least gives a general description of the location, that the two small prefab buildings were "in Ibziq".

Ibziq is here[0], but how far is not Ibziq? That is the subject of an ongoing military conflict between two serious belligerents; and a set of treaty negotiations which fail primarily because one side is committed to no compromise whatsoever.

[0]: https://www.google.com/maps/place/Ibziq/@32.3828152,35.41355...