Walking continuously through the gloom, one loses to some extent the idea of progression. Here he can get no look ahead, no backward view. He is the centre of a little circle of light, beyond which is immeasurable darkness, whence objects seem to come to him like apparitions, changing form as the first and last rays of light fall upon them, as though the shape in which they appear under the full light of the lamp were only some disguise of assumed innocence, which they cast off as they glide silently into the dark again, to take on some semblance too awful for mortal eyes. Farther and farther we went along these arched, crypt-like ways; passing frequently through lofty chambers where the roof could not be discovered, each with some fanciful and often inappropriate name assigned to it, until we came at length to what looked like a window in the side wall of the cave. Peering through this, and holding my lamp high over my head, I could see neither roof nor sides nor bottom,--only the wall in which was the window through which I looked. Upward it was lost in the darkness, and from my breast it descended, perpendicular as a plummet line, until it vanished in the gulf below, from which arose a sound of dripping water. This, my guide informed me, was "Gorin's Dome." Taking then from his haversack a Bengal light, he ignited it and threw it into the dark void. The sulphurous light shot up and up into a dome unlike anything built by human hands, unless it might be the interior of some tremendous tower, eighty feet in width, and nearly two hundred in height, which the beholder viewed from without, looking inwards through a window placed at two thirds of the entire height from the bottom. The inaccessible floor of this place is nearly level, and the walls strictly perpendicular from base to summit; the whole cavern having been hollowed out by the constant dripping of water holding carbonic acid in solution, which cuts the rock as ordinary water channels the ice of a glacier or the mural face of an iceberg into a semblance of columns, and sometimes into the folds of an immense curtain. The brief light fell upon the distant floor; flashed up once, bringing into strong relief every salient angle in the wonderful walls, and then died out; the awful prospect vanishing like a nightmare vision, and leaving nothing to the sense but the sound of the water dripping into the depths below. The light had burned only half a minute; but so strange was the scene, that this glimpse sufficed to photograph it indelibly in my memory. Gorin's Dome is not the largest of this class of sub-cavities in the cave, being smaller than Mammoth Dome; but it is the first of its class that the tourist sees, and it is viewed from so singular a stand-point that it makes the most startling impression.