Can Wandering Voice Keens Delirium use Inscrutable Journeying to Push its Incarna within a land?

Can Wandering Voice Keens Delirium use Inscrutable Journeying to Push its Incarna within a land?

No. While pieces are allowed to move within a land, Push explicitly requires moving to an adjacent land.
Nevertheless, with 3+ Air, the Incarna can leave a land and then return to it.