Giant severed monster claw/hand, cl...

Giant severed monster claw/hand, clawed fingers, standing in the sea, hollow inside like a volcano crater to house a large structure inside it. Dark blocks (blackstone, obsidian, netherrack), monstrous look, huge scale (30+ blocks tall). Severed wrist end is jagged and charred/burnt (no blood, no red). Hollow interior open at top like a crater. Standalone in open sea, no other buildings.