We saw the film “Muscle Shoals” earlier in the summer and decided we needed to go, much like we did with Yosemite after “Free Solo” last summer. On Friday of Labor Day weekend, we headed west on I-20 to Alabama. We pulled off I-65 in Cullman to see something I’d seen on billboards for years but never stopped to see: Ave Maria Grotto. It’s where a Benedictine monk designed miniatures of cathedrals and other landmarks from all over the world out of unwanted recycled materials like shells, broken…