Rather than make the image the very first thing you see, in deference to my arachnophobic readers please consider this a Spider Alert.
Warning: what follows is a pic of the largest spider I've seen (other than tarantulas in West Texas.)
How big was it?
I think the large abdomen was at least 1 1/2" in width. It looked like the size of a small plum.
(My apologies for not bringing something for scale near the Giant Lichen Orbweaver I saw, but I was mighty startled when it zipped a few inches in front of my face.)
It was so heavy, its web sagged alarmingly and needed extra support -- which the spider provided with at least six anchoring strands on one corner of the web alone.
Once I got over my shock, I caught a pic or two, and then sat on a nearby bench and waited for the spider to do something.
I must have scared it as much as it startled me -- it took a full 30 minutes before it decided it was safe, and slowly crawled arm over arm over arm over arm back up the web, over the anchor strands and into a little cedar-surrounded nook.
(Alright, you arachnophiliacs, this one's for you...)