Deep-lying

[…] in the bitterness of his soul he excused himself;—was he not justified in shrinking from the task of telling her, since now she knew the truth she had no impulse to speak to him? But a deeper-lying consciousness that he was in fault made him restless, and the silence between them became intolerable to him;

Source: wiktionary

A huge and hitherto unsuspected wealth of mineral substances was ready to come out of the deep-lying rocks and refresh the rather limited and jaded resources of the contemporary soil.

Source: wiktionary

[D]espite the fact of European control which has changed the role of the native ruler where it has not obliterated him; […] and which, in the realm of social institutions has subjected such a deep-lying pattern as that of the polygynous family to the impact of Christian conceptions of morality, these cultures continue with all vitality.

Source: wiktionary

There must exist a capacity for conceiving […] what ‘it must have been like’ to think, feel, act, in Homeric Greece, in the Rome of the Twelve Tables, in Phoenician colonies given to human sacrifice, or in cultures less remote or exotic but still requiring suspension of the most deep-lying assumptions of the inquirer’s own civilisation.

Source: wiktionary