This cave is said to be sufficiently spacious to contain 500 men.

So far back as the time of the Romans it was already used as a point of defence for the Danube.

Some five miles below it we notice the "Trajan's Tablet," hewn out of a protruding rock.
On the Turco-Servian side the masses of rock jut out so far into the stream, that no room is left for a footway.

Here the famous Trajan's Road once existed.

No traces of this work remain, save that the traveller notices, for fifteen or twenty miles, holes cut here and there in the rock.