Concrete Spelunking
One of the joys of noticing (and delighting in) the weird and obscure in nature is that sense of validation and camaraderie when someone else notices (and delights in) the same thing. I love exploring the old forts that bracket Puget Sound, particularly Forts Ebey, Worden, and Flagler. They date from the late 1800's, so are hardly ancient, but exploring them helps sate my longing for distant European castles. Several years ago at Fort Flagler on Marrowstone Island, I noticed stalactites growing from the concrete ceiling in one of the batteries. I was delighted, and recorded them in my nature journal. Calthemites at Fort Flagler, Marrowstone Island Recently, I read David B. Williams new book, Wild in Seattle . I felt that spark of validation and camaraderie when I saw that he had a chapter about concrete "cave" formations. " I've seen those!" I thought to myself, "I love those!" Now I know that they have a name. The concrete "cave" fo...