All the varied forms and caves, the projecting peaks, and edges of rock, are visible far down, until the eye is lost in the depths of darkness.

But the greatest beauty of the spring is the splendid colouring proceeding from the rock; it is of the tenderest, most transparent, pale blue and green, and resembles the reflection of a Bengal flame.

But what is most strange is, that this play of colour proceeds from the rock, and only extends eight to ten inches from it, while the other water is colourless as common water, only more transparent, and purer.
I could not believe it at first, and thought it must be occasioned by the sun; I therefore visited the springs at different times, sometimes when the sun shone brightly, sometimes when it was obscured by clouds, once even after its setting; but the colouring always remained the same.
One may fearlessly approach the brink of these springs.

The platform which projects directly from them, and under which one can see in all directions, is indeed only a thin ledge of rock, but strong enough to prevent any accident.

The beauty consists, as I have said, in the magical illumination, and in the transparency, by which all the caves and grottoes to the greatest depths become visible to the eye.