The cave prayer

The light is falling upon the light grey stone floor, coming in seemingly from nowhere. No source, no origin, yet there is a direction. A shade is cast upon the kneeling man, falling towards the gate. It is almost impossible to see both the man and the entire gate at the same time. In order to see the man, you can only see a fraction of the gate. And by seeing the entire gate, the man becomes invisibly tiny. A rythmic thumping, the pulse, can be heard and felt from beyond the gate.