Imagine a 60 Acre spider web! The web was spun on a field near Prince George BC by tens of millions of tiny spiders. This is perfect for Halloween week. I'd encourage you to check out the full article.
"A warning: If the thought of tens of millions of tiny spiders spinning a web 24 hectares - 60 acres - in size and crawling all over it scares the wits out of you, you might want to tread carefully over the following. Because that's exactly what happened last month on a farmer's field near McBride, about 220 kilometres east of Prince George. For reasons that area scientists don't really understand, millions and millions of tiny black spiders called Halorates ksenius - they have no common name - became trapped in Russell Jervis' clover field and started spinning webs." - Flat Rock