Apperitional Entrance

This is a short sewers map connected into what's supposed to be laid out as an impossibly long hallway. Between the two is a small underwater battlefield filled with hidden creatures, to the north of the hallway is a boss room that players can make their way to after reaching the hallway that harbors a large tentacled sea creature surrounded by the cultists that're summoning his power, you can break away the tiles under the cultists to set up extra tentacles for the beast to attack with. This board is part of my planned Call of Cthulu themed campaign, however feel free to use your imagination and make of it what you will.

Note: This was only the second map I'd had my hand at making so I apologize I couldn't work out how to connect the boss room to the map comfortably without having to shift the waters up and down during gameplay.