So I am waiting till you come; and then you and I will go over it together and learn all that we can about it.

We shall take Rooke with us, and, as he is supposed to know every part of it, from the keep to the torture-chamber, we can spend a few days over it.

Of course, I have been over most of it, since I came--that, is, I went at various times to see different portions--the battlements, the bastions, the old guard-room, the hall, the chapel, the walls, the roof.

And I have been through some of the network of rock passages.
Uncle Roger must have spent a mint of money on it, so far as I can see; and though I am not a soldier, I have been in so many places fortified in different ways that I am not entirely ignorant of the subject.

He has restored it in such an up-to-date way that it is practically impregnable to anything under big guns or a siege-train.
He has gone so far as to have certain outworks and the keep covered with armoured plating of what looks like harveyized steel.