- 02.106 must be underground before dawn,
- 04.020 Pound, pound, far underground!
- 04.021 Round and round far underground
- 05.008 and they do not easily lose their sense of direction underground –
- 05.010 or the edge of an underground stream that crossed the passage,
- 05.011 and not an underground river,
- 05.034 This’ll puzzle the nasty little underground creature,
- 05.036 He had been underground a long long time,
- 08.132 wound far underground
- 09.005 less deep underground,
- 09.018 Where this underground watercourse came forth
- 12.021 roaring like thunder underground,