A person might never really understand the depths of fear until they've plunged into the terrifying darkness of the coal mines in the Donbass.
The hellacious journey begins 600 metres below the surface. The only colours that accompany workers into the abyss are the metallic greys of the steel structures, the dim orange of their colleagues' hard hats, and the pitch black of the coal. It is a recycled purgatory - frightened souls and hardened men collected together out of sheer necessity; each allowed back to the surface in the evening, each sent back down to the darkness the following dawn.