neighbouring the gate of Hell into which Mammon led the elfin knight
... That houses forme within was rude and strong,
Like an huge cave, hewne out of rocky clift,
From whose rough vaut the ragged breaches hong,
Embost with massy gold of glorious gift,
And with rich metall loaded every rift,
That heavy ruine they did seeme to threat;
And over them Arachne high did lift
Her cunning web, and spred her subtile net,
Enwrappèd in fowle smoke and clouds more blacke then jet.