Pak jako by viděl sám sebe, jak jde, jde šerou chodbou a šplhá po nekonečném točitém schodišti.

Could you please translate this to English?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Then he seemed to see himself going along a dim passage, and climbing an endless winding stair.