Vent A1 is where Mr. Krabs can enter, just like in the east vent. And just like in Vent A2, there's a mysterious vent cover that leads to who knows where. It's like a maze of twisting vents, each one leading to a different mystery. Even the walls are hiding secrets, with vent covers that could reveal anything. It's a puzzle waiting to be solved, but who knows what lies beyond each turn?