After once again climbing a steep slope with ''Gleichenia'' thickets, one stands suddenly beneath the high enclosing rock wall of the mountain ring. The smooth water-washed stone seamed with water channels shows no variation in structure, and it appears almost as if the whole mountain was composed of a single monstrous block of rock. On this wall has been erected the steep 45 metre high rattan ladder; it is secured only at the bottom, in the middle and in the solid earth at the top, the rest lying free against the stone... Just above the middle of the ladder a small thin patch of humus is found, just sufficient to allow one to stand and rest for a moment. Both here, and at the top of the ladder a ''Nepenthes'' plant with unusually large pitchers has established itself. In the basal part, the pitchers are expanded into a jug shape. They are thus able, on the one hand, to take up a large quantity of water, and on the other, to hinder the escape of insects which have fallen inside, by means of the relatively narrow neck. (from the original Dutch〔 Hallier, H. 1895. Rapport over de botanische tochten in Borneo's Westerafdeeling gedurende de Borneo-expeditie 1893–1894. ''Natuurkundig Tijdschrift voor Nederlandsch Indië'' 9(3): 406–449.〕 and German〔〔 Hallier, H. 1896. Die botanische Erforschung Mittelborneos. ''Naturwissenschaftliche Wochenschrift'' 11(9): 75–79, 85–89, 97–101, 109–114.〕 in ''Pitcher Plants of Borneo'' )〔