The source of the Rheidol is a small beautiful lake, about a
quarter of a mile in length. It is overhung on the east and north
by frightful crags, from which it is fed by a number of small
rills. The water is of the deepest blue, and of very considerable
depth. The banks, except to the north and east, slope gently down,
and are clad with soft and beautiful moss. The river, of which it
is the head, emerges at the south-western side, and brawls away in
the shape of a considerable brook, amidst moss, and rushes down a
wild glen tending to the south. To the west the prospect is
bounded, at a slight distance, by high, swelling ground. If few
rivers have a more wild and wondrous channel than the Rheidol,
fewer still have a more beautiful and romantic source.
After kneeling down and drinking freely of the lake I said:
"Now, where are we to go to next?"
"The nearest ffynnon to that of the Rheidol, sir, is the ffynnon of
the Severn."
"Very well," said I; "let us now go and see the ffynnon of the
Severn!"
I followed my guide over a hill to the north-west into a valley, at
the farther end of which I saw a brook streaming apparently to the
south, where was an outlet.