- Beneath crushed resistance in WWII - London’s Tube, the ... - Secret - Subterranean - The place or space beneath the surface of the ground;
subterranean space. - Being below the surface of the ground; as, an
underground story or apartment. - Done or occurring out of sight; secret.
- Can clergyman be going back inside grotto? - Hollow out - Large cave - Large chamber in a cave - Large dark grotto - Large deep recess - Subterranean chamber