Hello wonderful gardening community! I am a pretty newbie gardener in my recent retirement. LOVING it, but I have ZERO knowledge about any of it. I live in the San Francisco bay area....Sausalito to be exact. Just over the Golden Gate bridge from SF. Just doing the best I can to build lovely front and back yards. Mostly from the internet (which everyone knows can be a very dangerous place to research things!) I'm hoping that one of you might be able to help with a wierd thing that has started happening in my garden. I'll attach two photos. What's happening is that mounds of dirt are appearing around my plants. One by one (and no.....we have a locked gated property....cannot be someone playing tricks on me!). I grew up in the midwest where we had gophers and moles, but this is different. The soil here is VERY dense clay (which is a whole other problem). So this doesn't actually seem to fit the soil profile. But I just cannot figure what it is. Anyone able to help me identify, and hopefully treat it? Thank you all SO MUCH!! <3