How much Source do I gain when I reveal the Naroran Altar landmark?

When you reveal the Naroran Altar you gain 1 Source for each Health chip on Active Units Adjacent to it, regardless of who controls those Units. Inactive Units in a Group do not have Health, so you do not gain any Source from those Units when grouped. The Landmark is responsible for the Defeat, not the player, so Source rewards for Units defeated this way are not gained by the revealing player.