From the personal notes of Jasper Aarensen

The strange fungal infection of one of the workers that has our doctor so unsettled was contracted in a shed. There's a giant harvester missing from in there (and a harvester-shaped hole in the side). We were able to identify leftovers of the fungus at the side - it seems to be alive, receding from fire.

Using Dowsing, we are able to track pieces to nearby, within an hour on foot. We leave towards there, making sure to lock the ship well.

We are now near enough to scry towards these things - and they are like contraptions from some trash horror movie: Pieces of harvester glued together by fungal growth. They are heading for us, it seems, so a confrontation is inevitable.

On hearing this, Aren's buddies tell us they are here to retrieve and contain a bio-weapon, which very likely is that strange fungus. Seems our goals align for now, as containing this thing is a necessary step towards restabilizing the colony.