About a mile farther south is KYNANCE COVE, justly celebrated as one of the most interesting and extraordinary spots on the coast; the descent into it is extremely steep, and overhung with frowning crags; the cove itself is formed by a numerous assemblage of Serpentine rocks of a dark colour, and which exhibit a beautiful polish from the constant attrition of the waves at high water; in one part, these groups are so singularly disposed as to open a fine natural arch into a grotto, which penetrates deeply into the cliff; the largest of these pyramidal masses is termed the ASPARAGUS ISLAND, from its being the habitat of _Asparagus Officinalis_. One of the rocks in this cove exhibits a very curious phenomenon whimsically called the DEVIL'S BELLOWS; there is a very deep chasm, through which the sea rushes like a water spout, preceded by a sub-marine rumbling, as loud as thunder; a flowing tide, accompanied with a swell of the waves, seems to be essential for the production of this effect. De Luc offers the following explanation of the phenomenon: "In the rock there is a succession of caverns, into which the agitated sea rushes by some sub-marine passage, and being dashed and broken against their sides, a large quantity of air[132] is thus disengaged from them, which becoming highly compressed, and not being able to escape beneath, in consequence of the perpetual entrance of the waves, is forced to pass with great violence and noise from cavern to cavern, until it forces itself, together with a column of water, through the opening above." Amongst these beautiful rocks may be seen _Diallage_ of a brown colour; _Jade_; _compact Felspar_, or _Saussurite_; and _Asbestus_. _Dykes of Felspar Porphyry_ are also to be observed in this spot. It is hardly necessary to inform the geological tourist that, in order to view this interesting scene to his satisfaction, he must contrive to arrive at a period near that of low water. On the summit of the hill above this cove the Botanist will observe _Geranium Sanguineum_ spreading itself in broad tufts. _Campanula Rotundifolia_ also occurs here. Continuing our route towards Cape Lizard, we shall perceive that the _Serpentine_ terminates about half a mile before we reach it, and is succeeded by _Micaceous Slate_, under which, at the Lizard head lie alternate beds of _Compact Felspar_, containing specks of _Hornblende_ and _green Talc_. There are two light-houses at this point which front the south, and stand nearly abreast of each other, but unhappily they are too often found to be insufficient securities against the darkness of the midnight storm, and the treachery of the sunken rocks with which this stern coast is beset. Foreign pilots, unacquainted with its perils, seldom keep the necessary distance from the shore, and from the steepness of the rocks no kind of assistance can be afforded to the mariner from the land.