As the audio begins, the chilling echo of a metal strike pervades the atmosphere. It's a harsh, resonating sound, reminiscent of a heavy door slammed shut, a noise that reverberates through the air, bouncing off cold, unyielding walls. The strike is sharp and sudden, a metallic clunk that hints at the unforgiving nature of the material being hit. It's a sound that bears the weight of finality, like a jail door clanging shut, sealing off the outside world. The echo trails off slowly, leaving behind an unsettling silence in its wake.