He closed his eyes for a moment, and felt himself falling into an endless, dark tunnel.

How far must I walk through the endless tunnels to be free of my family's hatred?

They began walking northward along what seemed to be an endless tunnel.

Beyond the doorway stretched what seemed to be an endless tunnel.

He felt like a man staggering along an endless tunnel.

It had the look of an endless tunnel that went nowhere.

There were no doors or windows, just this endless tunnel.

Then he stood up, his knees popping, and shone the light ahead along what looked to be an endless tunnel.

His impatience grew as he continued to follow what seemed like endless tunnels.

Hell was an endless tunnel of blood filled with drowning spirits.