That > [So that]
5 Therein is eaten out a hollow cave,
hollow > hollow; insincere, false, hungry
6 That seems rough mason's hand with engines keen
engines > tools; machines keen > sharp
7 Had long while laboured, it to engrave:
engrave > sculpture; hence: carve out
8 There was his won, nor living wight was seen,
won > dwelling-place wight > creature
9 Save one old nymph, hight Panope, to keep it clean.