In front of us stretched a series of giant steps leading into a vast court strewn with fragments of fallen pillars.

In the centre of the court, beyond the shattered pillars, rose another terrace of basalt blocks, concealing, I knew, still another enclosure.
"And now, Walter, for the better understanding of what follows--and--and--" he hesitated.

"Should you decide later to return with me or, if I am taken, to--to--follow us--listen carefully to my description of this place: Nan-Tauach is literally three rectangles.
The first rectangle is the sea-wall, built up of monoliths--hewn and squared, twenty feet wide at the top.

To get to the gateway in the sea-wall you pass along the canal marked on the map between Nan-Tauach and the islet named Tau.

The entrance to the canal is bidden by dense thickets of mangroves; once through these the way is clear.