This creature is about 2.5 meters long and weighs over 200 kilograms

This creature is about 2.5 meters long and weighs over 200 kilograms. It lives deep underground, especially in volcanic regions. The creature's body is covered in dark purple, rock-like scales that absorb light, making it nearly invisible in darkness. Its head has two long, sharp horns, and its eyes glow red with an eerie light. It has short limbs with razor-sharp claws. The setting should be inside a deep, dark cave with faint glowing lava cracks in the background. The overall atmosphere should be ominous and mysterious, emphasizing the creature's fearsome and elusive nature,