With all of his external senses sealed, Zach naturally lost his perception of time. He had a vague guess of how much passed. But without any external stimuli, the only thing he had to go on was his mind. His rapidly flashing thoughts did not help.
It felt like more time had passed than it actually did since his thoughts just spun faster and faster as he tried to distract himself.
What if he was already suffocating, only staying alive by the grace of the energy in his core? What if he was already dying, his thoughts mere remnants of life trapped in a stone sarcophagus?
Zach wanted to scream into the endless void of darkness he was in the middle of, even if he didn't get so much as an echo back. But he was mute. More silent than his soundless surroundings.
'This sucks…'