At length they came to a sharp bend. There the road, which had been veering southwards between the brink of the channel and a steep fall of the land to the left, turned and went due east again. Rounding the corner they saw before them a low cliff, some five fathoms high, with a broken and jagged top. Over it a trickling water dripped, through a wide cleft that seemed to have been carved out by a fall that had once been strong and full.`Indeed things have changed! ' said Gandalf. `But there is no mistaking the place. There is all that remains of the Stair Falls. If I remember right, there was a flight of steps cut in the rock at their side, but the main road wound away left and climbed with several loops up to the level ground at the top. There used to be a shallow valley beyond the falls right up to the Walls of Moria, and the Sirannon flowed through it with the road beside it. Let us go and see what things are like now! '
They found the stone steps without difficulty, and Gimli sprang swiftly up them, followed by Gandalf and Frodo.
When they reached the top they saw that they could go no further that way, and the reason for the drying up of the Gate-stream was revealed. Behind them the sinking Sun filled the cool western sky with glimmering gold. Before them stretched a dark still lake. Neither sky nor sunset was reflected on its sullen surface. The Sirannon had been dammed and had filled all the valley. Beyond the ominous water were reared vast cliffs, their stern faces pallid in the fading light: final and impassable. No sign of gate or entrance, not a fissure or crack could Frodo see in the frowning stone.
`There are the Walls of Moria,' said Gandalf, pointing across the water. `And there the Gate stood once upon a time, the Elven Door at the end of the road from Hollin by which we have come. But this way is blocked. None of the Company, I guess, will wish to swim this gloomy water at the end of the day. It has an unwholesome look.'
`We must find a way round the northern edge,' said Gimli. `The first thing for the Company to do is to climb up by the main path and see where that will lead us. Even if there were no lake, we could not get our baggage-pony up this stair.'