There were two of these in the rock-hard gravel road - the best place to dig in? No danger of falling soil or rocks perhaps. No inhabitant in sight, not that I was going to poke around in there anyway. I guess this is a spider home, but what kind of spider? My brief research on the net says it is probably a trapdoor spider.
We usually only see fungi in winter, when it's wet. However, a recent weekend of rain saw half a dozen of these pop up along the bottom track. At first they look like huge puffballs, and then expand outwards into these. This one was around five inches across.