Took an evening hike to watch the sunset. Ended up staying out past dark and walking back with my headlamp.
When I was walking along the road to get back to my truck I encountered some spider marching along the road with near military precision. There were two groups of them: each about 2 feet long marching in perfect straight lines, headed due west. I have never seen anything like it before and the only thing I could think of was in
Harry Potter and the Chamber of Secrets when Harry & Ron follow the spiders that are fleeing the castle to Aragog and learn that Slytherin's Monster is a Basalisk

. And thats when I realized I have read Harry Potter too many times...