What happens when both mine and enemy units are stunned on Vilemaw's Lair?

If both the attacking and defending units are stunned at Vilemaw's Lair, the following occurs at the end of combat:

1. Combat Damage: Because the units are stunned, they do not contribute their might to damage (Rule 410.1.b). If no other non-stunned units are present to deal lethal damage, all units survive the combat step.
2. Recall: Since the defender still has units present at the battlefield, the attacking units must return to base.
3. Vilemaw's Lair Interaction: Even though Vilemaw's Lair states "Units can't move from here to base," the attacking units are still successfully returned to base.

The Ruling: In Riftbound, Recall is not a move. Vilemaw's Lair only prevents the "Move" action. The cleanup step of combat that returns attackers to base is a recall effect, which bypasses the restriction on the card.

According to official Rulings:

"The attackers return to base normally because recall is not a move, so Vilemaw's Lair's 'can't move' restriction does not prevent the recall."