“As stated above, the exit of Cougar creek from Mill bridge takes place at the bottom of a narrow crack, or gorge, running at right angles to the general direction of the stream. The Gorge is 300 feet in length, about 50 feet wide, and is spanned by two natural rock bridges. The sides are composed of badly shattered limestone. On emerging from its subterranean course beneath Mill bridge, the creek flows through the Gorge 80 feet below the floor of the valley. At the lower or north end is the opening that leads to the largest and most interesting of the series of passageways forming the Nakimu Caves. The Gorge forms a very striking feature of the external scenery, and several places are accessible from which views may be had into its depths that are wild and impressive in the extreme. The opening is a dome-shaped break in the wall forming the north end. Into this the stream tumbles with wild fury over a confusion of huge fragments of rock piled up in the passageway. It creates leaps and falls and a dissemination of spray that makes the opening to the outer world, as seen from below, appear through a luminous mist. The aperture is some thirty feet wide and about the same height. [Illustration: View from Road—Mt. Avalanche, Eagle Peak, Mt. Sir Donald.] “Proceeding downwards, at the foot of the falls, the channel resumes its normal direction of a little south of east. It is necessary here to cross the stream, which swings northward into lower depths, and from now on the passageways are quite free from wet, though somewhat damp from the moistness of the Atmosphere. At the turn of the Creek’s direction you enter a chamber 150 feet long, 25 feet wide and from 10 feet high at the upper end to 30 feet at the lower end. This chamber is dimly illuminated by the daylight from outside. It is in a bad state of ruin, and the floor is heaped with debris thrown from the ceiling and sides. The roof is composed of one immense slab of rock sloping with the dip of the strata. The creek has broken through the northeast wall nearly in the middle of the chamber and disappears into the blackness with a dull reverberating roar. Fifty feet beyond the creek, the passage turns north again and it is necessary to descend a rock face of some 12 feet. On it are natural notches or footholds that would seem as though they had been cut with a cold-chisel for the special purpose; for persons unaccustomed to climbing, it is well to use a rope to steady the descent at this spot. The creek is now heard far down, welling through some rock-cut with a dull, intermittent pounding, resembling the blows of an immense sledge-hammer. Forty feet to the right, through a low roofed passage about 2 feet high, you creep into the ‘Dropping Cave.’ It is about 30 by 40 feet and 6 to 10 feet high, and so named from the fact that water drops from the roof in all directions. The floor is composed of broken rock fragments, and the walls and ceilings of dark blue limestone marked