Earth goddesses are often associated with the chthonic deities of the underworld.
[1] In Greek mythology, the Earth is personified as Gaia, corresponding to Roman Terra, Indic Prithvi, etc.
traced to an "Earth Mother" complementary to the "Sky Father" in Proto-Indo-European religion.
Egyptian mythology have the sky goddesses, Nut and Hathor, with the earth gods, Osiris and Geb.
Ki and Ninhursag are Mesopotamian earth goddesses.