Post marking the Source of the River Severn / Afon Hafren

Of course there is some conjecture regarding exactly where the true source is, but this post is a good enough indicator for most people's purposes. It's in a lovely spot, a saucer-shaped depression, sheltered and calm. It's worth taking a moment and tracing the mighty river's course mentally, right down to the Bristol Channel and remembering the river's part in history, people's lives and your own life.