@philcottie79,
Hi Philcottie
Nimrod is correct with epigene
From The Free Dictionary -
ep·i·gene (p-jn)
adj.
Formed, originating, or occurring on or just below the surface of the earth.
[French épigène, from Greek epigens, growing after : epi-, epi- + -gens, -born; see gen- in Indo-European roots.]