Leaving the Grand Archway by the eastern end, the excursionist descends, through a rocky defile interlaced with foliage, into a dry, stony creek, about which are growing some very rare ferns, as well as some which are common, but nevertheless beautiful, and also some handsome native creeping plants. From this point may be seen the pinnacle which rises over the archway to an altitude of about 500 feet. About 50 yards down this dry creek, and about 20 yards below the junction of the roads from the Grand Archway to the Devil's Coach House, is "The Rising of the Water." Here among the rocks in the bed of the creek the water bursts out of the ground like a sparkling fountain of considerable volume, and "gleams and glides" along a romantic dell "with many a silvery waterbreak." And if it does not "steal by lawns and grassy plots," or yet by "hazel covers," or "move the sweet forget-me-nots that grow for happy lovers," it does here and there "loiter round its cresses." Its banks are so steep that its course cannot be easily followed for any great distance, but, without much difficulty, it may be traced until it flows over a rocky ledge into a deep pool, where there is a wire ladder for the convenience of bathers. Thence it chatters on to the River Cox, whence it enters the Warragamba, which joins the Nepean a few miles above Penrith, and about 50 miles below the Pheasant's Nest. It does not, therefore, enter into the Sydney water supply, but passes through the Hawkesbury to the ocean. [Illustration: THE DEVIL'S COACH HOUSE.] CHAPTER IV. THE DEVIL'S COACH HOUSE.