Four miles from the summit of the pass, two great depressions in the ground, called _Boo-arks_, occur,—one 250 feet in diameter and 25 feet deep; and the other, 300 feet long, 250 feet broad, and 8 feet deep. These have evidently been caused by the subsidence of the ground into underlying caverns in the limestone formation. Near these we left the path and crossed the plain for about half a mile to visit the sacred cave of Tum Tap Tow, which is situated not far from the north end of the hill. It was in this cave, according to M‘Leod, “where the last Buddh (Gaudama) is said to have rested after a surfeit of pork which caused his death.” Further particulars of this legend accounting for the name of the cave were related to us, whereby it appears that, on hearing of Gaudama’s death, a number of his disciples shut themselves in this cave, and contemplated his perfections so intently as to become unconscious of the pangs and cravings of hunger, and thus also attained Neiban (Nirvana)—the state of forgetfulness and perfect rest. On dismounting at the foot of the hill, we camped for breakfast, and then started on foot to the cave amidst a heavy shower of rain. Before we had proceeded 50 feet, we found that we should have to wade nearly up to our waists in the icy-cold water flowing out of the face of the hill, and therefore returned to rearrange our toilets. I put on a Burmese Shan costume, topped by a waterproof coat; Mr Martin wore a flannel shirt under a coat, and a Siamese _panoung_ or petticoat; whilst Dr M‘Gilvary draped himself in a gossamer waterproof, and carried a pair of sleeping-drawers to put on when he reached the cave. None of us wore shoes or stockings, and the sharp fragments of limestone in the path made us walk very gingerly. After leaving the brook, we scrambled up a slope of shattered limestone and great blocks that had tumbled down from the cliff until the path lay up the face of the precipice, when it became so difficult as to make me rather dread the return journey. On reaching the entrance, we found it ornamented with stuccoed figures of spirits, having bird bodies, and elephant tusks and trunk in lieu of a beak. Inside was a lofty cavern lighted by a natural skylight. On a raised platform in the cave was a great reclining image of Buddha, some 30 feet long, and around it a number of figures representing his disciples. Numerous small wooden and stone images of Buddha had been placed by pious pilgrims about the platform. Pillows, mattresses, robes, yellow drapery, flags, water-bottles, rice-bowls, fans, dolls, images of temples, dolls’ houses for the spirits, and all sorts of trumpery, were lying together, with fresh and faded flowers that had been offered to the images, and were strewn in front of them. A steep ladder led up to niches near the roof of the cave, in which other images were enshrined.