Diamond Monster

So, you're saying that if I placed 8 Swamps there, then 100+ monks would be guarding it?
I'm really interested in understanding this system, can someone explain it in more detail?

Actually, it's quite simple: the more zones of a given type on the map, the stronger the guard. Interestingly, there's a pattern where the native center on Jebus, which is a good bonus, also makes it more difficult to guard Dwellings and Pandoras with native troops.
P.S. If anyone doesn't know, the zone type and the terrain type may not match, for example, on the Balance map. There can be 10 zone types, all cities + neutrals. The zone type determines the Dwellings and creatures in the Pandoras, as well as the main city of the zone (there may not be any cities at all if the template provides for it).