If you reach the nearby Labyrinth, that is a large, circular, maze, head east of it. Walk up a small hill, kill two tigers and the collectible is yours. Although it is really close to the main road you basically can’t see it because the view is blocked by a large tree that surrounds it. Few steps away from it you can notice “Visions of the Green Pact Bosmer” lorebook.
Sand Kingdom Moons - Super Mario Odyssey Power Moons