The second group was also Sand Howlers, but less powerful ones from the same spawn.
[Hawk, do you see the source of the spawn?] Karl asked.
[I think that it might be gone. Look closely at them, some of these have a lot of old damage on them. I think that they've been out here for months or more.] Hawk replied.
If that was the case, it would make sense that the origin anomaly was long gone.
The changing terrain of the inner regions of Gabil actually explained a lot of the issues that they were having closer to the shore line.
The monsters changed with the changes in terrain, so even if they cleared out all the ones that were coming out, and then went across the whole country in a wave of destruction, as soon as things changed, they would have to start over.
The best that they could hope for was to keep them contained to the central areas.