Indeed there it was within a couple of hundred yards of us.
Following Marama we climbed the sloping path which ran up the cliff and ascended a knoll whence we could see the lake and the cone of the volcano in its centre.

At least we used to be able to see this cone, but now, at any rate with the naked eye, we could make out nothing, except a small brown spot in the midst of the waters of the lake.
"The mountain which rose up many feet in that storm which brought you to Orofena, Friend-from-the-Sea, has now sunk till only the very top of it is to be seen," said Marama solemnly.

"Even the Rock of Offerings has vanished beneath the water, and with it the house that we built for you." "Yes," I said, affecting no surprise.

"But when did that happen ?" "Five nights ago the world shook, Friend-from-the-Sea, and when the sun rose we saw that the mouth of the cave which appeared on the day of your coming, had vanished, and that the holy mountain itself had sunk deep, so that now only the crest of it is left above the water." "Such things happen," I replied carelessly.
"Yes, Friend-from-the-Sea.

Like many other marvels they happen where you and your companions are.