Spider army marches forward

[Bigfoot]

I had this awesome thing happen today while playing. What I do now is that I move my camp every once in a while -- I try to place my camp close to resources, and along a road so I can just follow the road home at sunset.Well, I just moved my camp, and night came. Suddenly I heard monster sounds, and I was like "oh, oops, must've placed the camp close to a nest." Then at the corner of my eye I see a spider walk past... then another... then another and another.They were all going somewhere! But I couldn't follow them, and in the morning they were gone. Very creepy, and makes me wonder what they're up to, those nefarious creatures.