But when the two explorers peered through the ragged aperture, they did not look into the open air, but into another chamber, very much larger than the others, with high, irregular walls, but with scarcely any roof, almost the whole of the upper part being open to the sky.
A mass of broken rocks on the floor of this apartment showed that the roof had fallen in.

The captain entered it and carefully examined it.

A portion of the floor was level and unobstructed by rocks, and in the walls there was not the slightest sign of a doorway, except the one by which he had entered from the adjoining chamber.
"Hurrah!" cried Ralph.

"Here is a suite of rooms.

Isn't this grand?
You and I can have that first one, Maka can sleep in the hall to keep out burglars, and Edna and Mrs.Cliff can have the middle room, and this open place here can be their garden, where they can take tea and sew.