Fossile and mineral hunting became a little side hobby of our kids lately. There are a couple places nearby where apparently fossiles can be found easily. Since at least fossilised seashells can be found easily, they had some success quickly. We keep exploring new sites, on the day the picture was taken, we were not successful. Apparently you are supposed to walk through the dirt in low tide in the river Severn to some off-shore rocks. But we could not get through the mud