Ok, here are the facts.
We can see a shipwreck sunken in the water.
We can see rock walls and fog, similar to the Isle's cliffs
We can see a mining tunnel entrance in that cliff's wall.
We can see searchlights near the ship.
We can see various junk on the shipwreck.
We can see a lamppost near the tunnel that is commonly seen by paths on Old Mount and Bootleg Pass.
Here is what we know about Episode 4. The major theme will be a mining/Western steampunk feel.
Hence why we have a mining tunnel.
Questions: What role could a mining tunnel have on Ep. 4 relating to Moses' Bible story?
Could the ship be used by Martin Ambrose to transport Academy Automicus students to the Aetherswell/Old Mount? (think Red Sea event)
Have at it, my fellow speculators!!