We now began to see river hills again, rising to a moderate height, from a little behind the banks on each side.
Four miles from hence we left Flinn's ferry, where is a very handsome settlement on the left. Three miles and a half farther brought us to the upper end of Rocking cave island, just above which the river is {247} a mile wide, and in another mile we saw on the right Casey's farm, where the landing abounds in curious loose limestone petrifactions. Two thirds of a mile from hence, we thought we saw the Rocking cave, when we observed a cavern forty-five feet deep, three wide, and nine high, the floor ascending gradually to the vault at the end, where it is terminated by a petrifaction, like the hanging pipes of a large organ.—The sides which meet at the top, forming a Gothick arch, are of limestone, with several large nuclei of flint, which seem to have been broken off designedly to smooth the inside of the cavern.
Rowing along shore with the skiff, we were soon undeceived as to that's being the Rocking cave, as a third of a mile lower down, one of the finest grottos or caverns I have ever seen, opened suddenly to view, resembling the choir of a large church as we looked directly into it. We landed immediately under it and entered it. It is natural, but is evidently improved by art in the cutting of an entrance three feet wide through the rock in the very centre, leaving a projection on each hand excavated above to the whole breadth of the cavern, the projections resembling galleries. The height of the mouth is about twenty-two, and that of the rock about thirty. It is crowned by large cedars and black and white oaks, some of which impend over, and several beautiful shrubs and flowers, particularly very rich columbines, are thickly scattered all around the entrance. The length (or depth) of the cavern is fifty-five paces, and its breadth eleven or twelve.
