in the middle of the land, or in the middle of the Earth (see Molina)
Orthographic Variants:
tlallinepantla
Alonso de Molina:
tlallinepantla. enmedio dela tierra. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 124r. col. 1. Thanks to Joe Campbell for providing the transcription.